Originally Posted by
Qualia
The theory that guy mentioned was the one brought up in WoTLK (which, I'd like to point out, isn't even true in canon anymore as the ToA was filled with corrupted data due to Loken's meddling), that "Excising parasites would result in loss of host-- <...> If they killed the Old Gods, Azeroth would've been destroyed...". The theory, "dealt with" and "down" have never meant to be...uh... imprison, weaken, or any state they are supposed to be in now from the OGs-are-alive crowd's claims. It flat-out stated "if they killed the Old Gods" in that theory there.
This was also addressed a dozen of times. The Cataclysm events started way BEFORE Deathwing even come back. It started before Lich King was even killed, for that matter, in form of the pre-event with earthquakes (that comes together with ICC, in other words, shortly after Yogg was killed) and much later the Elemental Unrest with elements going mad. It started months before Cata, even. Deathwing, as powerful as he was, wasn't so powerful that he could wrecking Azeroth without even being on the planet, or even the same dimension. The world was already weakened before he bursted back to Azeroth (and damaged the World Pillar in process). And yes, N'Zoth was behind Deathwing's actions. Still, so what? Did you miss that they was saying "Because of the Old Gods"? Old Gods in plural, not singular, my dear. There was a reason for me to put that character "s" in bold. Last time I checked, N'Zoth was still a single Old God. Am I somehow wrong and N'Zoth multiplied himself or something?
First thing first, the comic is canon, as stated by Blizzard ("When something goes out the door at Blizzard—in a game, a novel, a manga, or anything other than mods or the table-top RPG—it's canon"). Afrasiabi even reaffirmed / clarified that all of the comics are still canon, with the exception of Me'dan being the Guardian (which doesn't matter here as Me'dan stopped being Guardian in the comics so he isn't Guardian), right before Legion so there isn't anything "in question".
In the demons' case, their immortality was stated specifically and they could reform on their own. The Old Gods haven't done so, neither have there been any sort of statement like that - except from Old Gods' followers, who aren't very trustworthy to begin with. Can be resurrected or can interact with the world even after death is NOT unique to OGs, and NOT a sign of immortality. Beings who are powerful enough can do that just fine. Otherwise, we'd have a bunch of immortal characters running around (i.e: MU Gul'dan who was only an orc). With that said, plus the fact that every little piece of information stated that they are dead (as linked in my previous post) - I'm not even counting the NPC's opinions as they can be unreliable, just the developers / omniscient narrators - they are just dead canonically for now. For someone who don't want people to be "toxic fucks" (wow, such polite language against "toxic" people who have been pretty civil!) and "keep their headcanon out of things here", you don't seem to be citing any official source (and even ignoring the quest text I mentioned). Sorry, but in-game information and Word of God are more canon than your or my own opinion. Give me any statement from Blizzard saying that they are still alive, and we can discuss further about it.
Their direct inspiration means nothing - especially now that they have been moving away from their original Lovecraft version. Being inspired by Lovecraftian beings doesn't mean they automatically inherit all the traits. In fact, they aren't even mysterious anymore: Chronicle established that they were just creation of the Void Lords (in Azeroth's cases, four or five out of... probably millions in the Universe?), being void energy given flesh and tossed around to be some sort of cosmic parasites.