The following is a tremendously disproportionate analogy given that we’re talking about a microblogging website, but I really don’t think there’s any better term for it:
It’s really less like you’re calling Twitter by its deadname and more like you’re refusing to call it by its slave name. Twitter didn’t come up with this on its own, some guy just rolled up and said “I’m changing your name because yours isn’t cool enough.” Like, fukken Kunta Kinte.
Again, very unfortunate that that’s the only comparison that comes to mind but I’m really blanking on anything else. Jean Valjean, I guess. Maybe Darth Vader. Locutus of Borg.
Weirdly, season 4 of both Fringe and Eureka have a portion of the main cast shunted into an altered timeline and having to reconcile their original memories with their “new” histories, to varying degrees of success.
Travelers kinda inverts the premise in its second season, where a bunch of time travellers sent back to fix the past start seeing their superior foreknowledge slowly rendered useless by the fact that their mission is actually succeeding in changing the future.