>>66564
So, first and foremost: no, I don't take Chronicles at face value, partly because Blizzard are prone to retconning their own lore, albeit in a "that was told from in-universe narrator's perspective, here's what happened for real", like they did with Garona's ancestry, partly because, as a corollary from the former, a POV information, which means that, even if it's presented in encyclopedic format, it's probably biased. And yet, I don't think that it's all lies, more like it's all Jedi truth, as in - it's true from a certain point of view. And I think that this POV is not Pantheon's as you suggested, but Light's. I'll elaborate on why I think that later.

Let's start with an apple of discord: the Pantheon and their relations to Death and Void.

Yes, titans sworn to protect all life, but it doesn't mean that they should oppose Death as a concept, it just means that no matter what happens, life should continue to exist. And, as everyone IRL with half a brain understands (even though we're generally scared shitless of it), death is an inevitable part of life cycle. Just like that, titans in general (without taking into account personal points of view which they evidently have) at the very least don't oppose Death as a concept, and as far as I can see, more tolerant to it than Fel creations (again, I'll elaborate later). What they do oppose, no doubt here, is complete death of all Life as a concept, or rather cessation of existence. Which is closer to Void's domain than to Death's.

My first argument is the fact that when titans were seeding worlds with life to find out whether it has a world soul, that life was mortal. At least on Azeroth and Draenor anyway, we can't really be sure for other worlds.
You could argue that they created Titanforged, who are evidently immortal. But it's safe to say that they weren't supposed to be alive (in strictly biological sense; yes, I remember your question "what is life?") to begin with. They're not life, they're basically titans' tools: builders, guardians. watchers.
Then there's actual life: flora, fauna, trolls, dragons, drunken bears et cetera - all of them mortals.
Another argument you could make is that they couldn't make these life forms completely immortal. My counter argument is that they could, as evidenced by night elves being immortal thanks to Nordrassil and lameborn being immortal thanks to the Nightwell. And yes, technically latter weren't all immortal, as some of them evidently grew old, but they had potential for immortality - according to depiction of Suramar campaign, both Thalyssra and Elissande were present during War of the Ancients, and didn't age a day since.
Again, you could argue that both these cases had external power source that was fueling their immortality. True. Then again, titanforged are, in fact, immortal. So if titans wanted so they could make all their creations immortal. Well, probably anyway.

Another argument is that during their messing with worlds when something was going wrong they were resorting to Reorigination - planetary hard reset. Which implies planet-wide genocide. Which is, well, death. Obviously.
Whether or not they actually used it on any world... We don't know for sure, yes. But Loken's and Algalon's words, as well as Reorigination device in Uldum and the fact, that Prime Designate literally had Reorigination on speed dial in case of his death, suggest that yes, they were using it from time to time.
Of course they were starting anew every time, yes. And Life as a concept never stopped. But Death as concept was always following and preceding it, as it should be. As it is the natural order.

And this is, albeit I admit that this is a stretch, my third argument. TItans, as creatures born of Arcane and, are being driven mostly by Arcane's nature. Or at least implied to, as they were ordering all worlds they found. As such, as life and death being part of the cycle that is a natural order, they would be forced by their nature to uphold it. But, again, as I said, that one is a stretch.

Now, about my words that titans are more tolerant to death than Fel creatures, i.e. demons. Again, it's more about general point of view, as, just like titans, demons do have personal opinions too.
The thing is, general point of view on death among demons seems to be that, to put it simply, death sucks. That conclusion mostly comes from their words and their pride.
It's kinda obvious, really: they use "mortal" as an insult, an address to life forms that they deem lower than themselves. Beside that they see the fact that they will eventually be reborn as their greatest advantage. Death doesn't exist for them.
Well, except it does, of course - in their own world, but, drunk on power, they deem themselves beyond mortality.
All in all my assumption is that they see natural final death as weakness.
Which, by the way, would fit into my stretched out argument, as by the nature of their power being Chaos they oppose to Order, including natural order of things, like the notion that life and death are both necessary.

Next, about my opinion that the bias behind Chronicles is Light's.
Here's the thing, as I see it, the only cosmic power that was shown as undoubtedly benevolent is the Light. While Void (horrible realm of unending torment or something like that), Death or rather Decay and Shadowlands, its corresponding realm (horrific labyrinth where souls are drawn for eternal torment), and Fel (strives to destroy all life) getting such description isn't surprising, as they represent everything that opposes the Light - the ultimate power of creation, but, as I see it, even Nature/Life and Arcane got some backhanded description, as something that needs to be controlled.
Well, technically, more closely to real life, Fel, Decay and Void are all connected to humans' biggest fear - change, death and unknown, of course, and because of their destructive nature we perceive them as inherently evil by default, which is why similar powers represented similarly in real life religion. But let's use some backwards logic, and assume that, as opposed to faith and religions in real life, which are humans' constructs, in World of Warcraft we are the Light's construct, as Chronicles state that the Light was at the beginning of creation, and everything, including the Void, was created from the light one way or another (which is in itself a little bit that implies the Light's bias).
So, basically, as our morality by default shares its core with the things that created us, we perceive them as good and their counterparts as evil, and that is what makes us sympathetic with the Light's bias. Again, by default. Yes, our morality is more complex and way more flexible than that both IRL and in WoW.
So Chronicles, as I see it, are written from the Light's POV. And I'm sure it's not all lies, as there's no point for Blizz in publishing the book series that is stated to be a comprehensive guide to the WoW backstory only for it to be complete bullshit. But it very well could be half-truths or, as I said before, Jedi truths. Meaning that yes, technically, Void as a... let's say, plane of reality is incomprehensibly insane realm of eternal torment. From the Light's perspective, that is. That perspective is clearly reversed for the creatures of Void, as you yourself pointed out, making an example of the void walker, who "doesn't like this place". Yes, they don't like it, because for them our reality is abomination, an incomprehensibly insane realm of eternal torment ("You have known the Shadow as nothing but horrors. The Shadow sees the Light in the same way" said by Locus Walker in the third part of Thousand Years of War). But there's nothing about it in Chronicles, only the fact that Void Lords want to unmake reality for some reason.
Another bit of the Light's characterization from the Thousand Years of War (from the same source) is that "it seeks one way and sees all others as lies" (I can't remember the exact quote), which shows to an extent in Chronicles, where, as I said before, all powers except Light are shown as barely reliable at best and entropic and unnatural at worst (which is one step away from saying "evil").
At the same time our experience in the game (even after that universal retcon) shows that, while it's true to a certain extent, there's more to every listed cosmic power: Fel, Decay and Void turn out to have some redeeming features, but of three remaining forces two turned out roughly the way they were represented in Chronicles. These are Arcane and Life. But it's definitely not the case for Light, which was shown to be not as benevolent as it wants everyone to see it. In fact, Light's actual behavior deviates from its Chronicles description more than any other power.
So that's why I think that Chronicles are biased towards Light, not the Pantheon.

By the way, Thousand Years of War is actually good food for thought on Light and Void. Because, even though, as it wasn't written in encyclopedic format, but as narration from clearly stated POV, it's most definitely biased, as opposed to probably biased Chronicles, it has a character whose POV is unbiased towards LIght. And yes, I understand that Locus Walker may be biased towards Void instead, but even then he presents us with another perspective that can be explored.

Back to Pantheon and their relation to the Void Lords (as you suggested that they are actually Void Lords). Unlikely, because, when shadow priest player gets to the Seat of the Pantheon, Xal'Atath, actual servant of the Void Lords, has that to say: "Long have we sought entry into this realm! To think we have a mortal to thank for giving us our foothold. Your service will be remembered!" That implies that before that Void didn't have access to the Seat, which wouldn't be the case if titans were actually connected with Void.
Unless, of course it's a case of right hand not knowing what left hand does. Which is, again, unlikely.

About quarrel between Sargeras and the rest of them after he shattered the corrupted titan. As I see it, the problem Pantheon had with it is not that he killed that titan, but that he killed him without even trying to find another solution. Basically the same issue Uther had with Arthas' decision to cleance the Stratholm. Amusingly, both Sargeras and Arthas were right (well, in my opinion) in that particular situation, as at that point it was too late, and all they could do is damage control. Even more amusingly, these events were turning points in the roughly same direction in their respective fates.

Now, the last bit about Pantheon: relation to Argus. Again, source is Thousand Years of War, part two this time, more specifically, memories of Argus himself. He showed Alleria that he was pretty much fine, sleeping peacefully with creatures living on him (eredar, obviously), until he was betrayed. Admittedly, there's nothing in those memories about the Pantheon, only about betrayal and those who torture him, those who torture other worlds and seek other, more powerful world to do the same to it (implied to be Azeroth). This betrayal implied to be eredar accepting the Fel and joining the Legion.
You could say that it may be unreliable, and yes, I admit that yes, it very well may be, but, again, it's notable in that it's another perspective not connected to the common bias. So at the very least it's worth exploring.

And the last bit: you said that draenei are basically holy demons or something like that (I don't remember the exact quote). Um, no. Demons are creatures of Fel, and eredar originally have no connection to it, they only became demons after accepting Fel and joining the Legion. Draenei, on the other hand, have no connection to demons at all.