Dorsey jumping ship's about as good a reason as any to jump to Bluesky, especially considering Twitter's currently haemorrhaging users from the one-two-three punch of the AI training, the crippled blocking and THE ELECTION^tm^.
By my guess, the AI training is probably doing the most damage - that one's prompting artists to bolt for the exits, and if Tumblr's NSFW ban taught me anything, its that if the artists start leaving, they're gonna start taking their fans with them.
This is pure gut instinct, but I suspect Twitter's probably gonna die sometime during Trump's term - the banks which funded Musk's takeover consider it their worst deal since the Great Recession, and the rapid exodus of users is gonna further cripple Twitter's ability to attract advertising revenue.
Part of me suspects we're gonna see Twitter getting banned somewhere during Trump's term as well, a la Musk's tangle with Brazil.