Ok, sure. Fine. If somewhere down the line, Blizzard decides to write Chronicles volume 4 and within that volume, they choose to address Shadowlands and Dragonflight quest content so specifically that they even address the race of the characters who perform said quests, something they have never done in past volumes because quests are not raids, then sure. They might decide there was no Horde content. And at that time, they might also decide that no Horde ever set foot on Amirdrassil, so you should stop stressing it.
Azeroth is not the real world. Night elves are not a real people. Warcraft has not ever been depicted as behaving as a surrogate for reality.
The high/blood elves suffered a loss of 90% of their people in the Third War. Six years later, they have massive forces assembled in Outland and have befriended a race of freed Scourge, the same Scourge that caused their own genocide. About a decade later, this also long-lived race has grown in population at such an astounding rate that they have split off a third quasi-racial group with enough numbers that this small group can also field forces in numerous fields of engagement without worry about effectively genociding themselves.
The fourth War was such a brutal affair that both had depleted their trained soldiers and, by Anduin’s words, were fielding farmers. With effectively fully depleted armies for the two global super-powers, who have in the past shown they have extremely large standing armies, and drawing on the world force to fill in the gaps, you would be understandably concerned for what would happen a year later when a zombie apocalypse suddenly happened. There just shouldn’t be the bodies to prevent it from becoming an extinction event… And yet it was fine. So fine in fact that nobody bothers mentioning it five years later.
A super-massive foreign object struck Azeroth with enough force to cause the ground to rupture in distant lands. No tidal waves happened. The climate wasn’t affected. Areas surrounding the impact site were completely unaffected and contain intact structures.
A quick count of apocalyptic events that have nearly eliminated all life on Azeroth over the last twenty-ish years is approximately half a dozen to a dozen. Daily life is completely unaffected by this fact. There is no wide-spread existential dread that the entire cosmos literally wants to murder them, a fact with tangible proof backing it up. People don’t seem bothered by it whatsoever.
Night elven society remained entirely insular for ten thousand years. They suffered no culture shock when they were suddenly a part of a global superpower full of very different cultures and races. Their society went largely unaffected by this change. They seemingly shrugged and just went with the vibes.
Once more, I could go on. And on, and on, and even on some more about how Azeroth and its inhabitants defy all real-world logic. That’s without even bothering to mention the prevalence of demon-conjurers, undead super-soldiers and hell-forged super-soldiers being largely accepted into societies that have been seriously impacted by both the undead and demons.
But none of that matters. Because at the end of the day, the night elves have the longest history with demons, and only five or six years after surviving another demon invasion that tried to slaughter their people again, the draenie arrived and the night elves were not only willing to trust them after a single conversation, they welcomed them into their homes as permanent new besties. All because the blue demons said they’re not demons, and everyone accepted them at their word. Again, after numerous attempted genocides (and even some arguably successful ones).
In that light, giving one single Horde Adventurer that same treatment after doing far more than simply saying they aren’t the evil ones is far more realistic than making night elves suddenly selectively racist now, in spite of their proven record of being not that.
