Does everyone who’s following the old account automatically refollow you when you do that?
It doesn’t port over any old comments/posts, but I’m pretty sure that when anyone @'s you, it’s forwarded to the new account.
IMO it’d still be useful to be able to use an identity you control, like a domain name.
The more windows falls down the enshittification spiral, the more likely the EU will get pissed at Microsoft and fund Linux environments where it’s needed.