I have one niche that I use twitter for. If it wasn't for that - would have deleted my account long time ago. Things like this push me towards that direction, though.
Then scaling and paying for it is the hard part.
The network effect / entrenchment means that any replacement has to be massively better in every dimension to have a chance. Otherwise people just stick to what they know, and then other people stick to it because the other people do. And so on.
I personally think Musk is a garbage-tier human who represents everything wrong with culture wars, and his brain is long blasted into a mush of worthless racist noise and stupidity by drug abuse, so I deleted my X account. Loads of others are too cowardly/selfish to do so.