You’re using unreliable narrators to make assumptions and I’m just making educated guesses so neither of us are right or wrong until the game actually shows us the truth.
The Primus said that they had stopped Zovaal and we’ve been told Zovaal betrayed them, they never said who ripped the sigil out of his chest and cast him into the maw. They also never said that the maw wasn’t his original covenant realm, which it very well probably was because Zovaal is surprised when the player (empowered by azeroth and who has also been empowered by the titans before when fighting Argus) can activate the transporter to escape the maw, and fulfill the maw-walker prophecy. Zovaal calls the transporter “a relic of the first ones.” So It’s very possible the first ones created the cosmos, with everything including the mortal realm, shadowlands, light, void, etc. as that “fractal” force that creates infinite layers and infinite truths.
If Elune can be the Winter Queen’s sister, why can’t the titan pantheon also be her siblings? We know Elune has empowered many other night warriors before and there are several night warriors in game in Ardenweald, Maldraxxus, and Revendreth, and possibly Bastion.
I’m not entirely sure how wild gods and dragon aspects go to Ardenweald when they die to begin their cycle of rebirth. Unlike normal mortals like humans, they become wildseeds and are reborn, it’s entirely possible they have a direct connection to the Shadowlands and Ardenweald and do not need to be ferried by ascended kyrians or even judged by the arbiter because they are directly connected to Ardenweald.
If the First Ones created the Shadowlands, couldn’t they have also created the mortal plane of existence as well to supply the Shadowlands with anima? What if the First Ones created the Titans along with the other cosmological realities, and the First Ones were eventually killed by their own creations?
It seems too coincidental that a “death titan” would be datamined, and then Sylvanas, working with the jailer, created all the war and death in BfA just when the Arbiter (the machinery of death, aka the titan construct built to supply anima to the various parts of the shadowlands) wasn’t working anymore.
I think the titan pantheon and the eternal ones are the same thing just in different parts of the cosmos. We know the Light and the Void and the Legion have all attacked the shadowlands before. We know Elune is the Winter Queen’s sister. We know that Ion said in an interview that the eternal ones are “titans ++” and it’s not much of a stretch to say that Elune and the titan pantheon and the eternal ones are all “siblings” and call each other brother and sister. They came from the same thing, probably the first ones.
I can understand why people think all of this is way too complicated and I agree that this grand tapestry of lore isn’t given enough direct attention in game and there are way too many cliffhangers dripping out small hints of answers that only leave more questions but honestly, I think my theory here could 100% end up coming true and we may very well see the titan pantheon, including sargeras and illidan, by the end of this expansion.
They’ve confirmed that Shadowlands is setting the stage to explore the cosmology chart of WoW.