Also, donโt leave your account unused, delete it. User and follower numbers count.
And least as important, reply (if necessary to another corporate mail address) every email with Twitter/X in the footer, with a kind request to stop promoting and facilitating X.
The problem with Bluesky is that it has exactly the same kind of legal structure (for-profit company) with the same kind of objective (make lots of money for founders and early investors) as Twitter, thus is just as likely to be bought by a Nazi billionaire.
If you're leaving X because it turned into a Nazi bar after being bought by a Nazi, going to Bluesky is just setting yourself up for being in a similar situation again in a couple of years.