The new name alone isn't what made Twitter crap, but it is symbolic of the massive changes made to the site by the new management. I like to think of it this way: Twitter is dead. X is the reanimated corpse.
X is modern New Coke. At this point, I'm not even sure which of the worst CEOs I'd compare musk to. He's like all of their worst traits rolled into one. I have no doubt there's some weird financial accounting going on at Tesla, just that they haven't been found out just yet. His involvement into the crypto sphere and with doge should have thrown up regulatory alarm bells already.
Watching Twitter crash and burn under musk has been so much fun. It being a haven for all the worst dregs of humanity and an advertiser's worst nightmare is just the cherry on top. Old Twitter before mush for brains musk was still salvageable. He's somehow done everything to make it worse.
I'm not sure I'd call it fun, but there's definitely something soothing in the thought that no matter how much I fuck my life up, there's no way I can ever make a 44 billion dollar mistake. So there's that.
I think what we really want is to have it restored to pre-musk-ownership level of functionality. But that doesn't make for a nice four syllable group chant. Also I doubt the douche is capable of ever admitting how wrong he was.