I think the name Mastodon tell us all we need to know, it will go extinct.
Given the media attention, I suspect Bluesky will get more users in the long run. Not that I care one way or the other.
Seriously though do we need a twitter replacement? Wasn’t twitter bad enough already, even before Musk? I was an avid twitter user 10 years ago, but stopped because it was so pointless.