It isn’t final until people actually leave there. As long as there’re users. Otherwise not gonna happen :(
Twitter's whole thing is its outsized cultural relevance for a rather small user base. If that goes, well, arguably, it's had its final day. This particular change seems like it might go a long way towards ending its relevance; an awful lot of people used twitter only via clicking links from news articles etc, and never actually had an account.
dogpile too
"this isn't an airport you don't need to announce your departure" - aristotle probably
if twitter is dead to you, let it rot and die in the corner. free yourself from caring about its outcomes