Maybe I'm just talking for myself but if I used Twitter, and a decent modern alternative existed, I'd at least make an account and hope other came along so I didn't have to be part of his "town square" or his "everything app" (which sounds like a nightmare).
I think Musk has done some good things in the past, but honestly, he seems like an asshole and increasingly willing to do questionable things for money and to protect his interests.
I don't use any of his products and I'd been more than happy if it stays that way.