But the Infinite Dragonflight has meddled with an infinite amount of timelines, much like how Kairoz did. Kairoz also like, just pulled shit out of a veritable bag of timeline tricks during the trial of Garrosh.
Honestly it's easier and better for my own sanity to just think that blizzard writers are incompetent and we're never gonna have cogent storytelling again. People who defend this writing, because there are a few on this forum who thinks the current writers are good and the negativity is overblown should really get going to read some actual decent literature and worldbuilding and see how much it contrasts with this garbage