Don't act like it wasn't completely useless before Musk. I never understood how anyone can have any kind of discussion, much less a serious one, on Twitter. No matter what I followed or unfollowed or blocked, there was always so much crap and outright scam I just deleted the account and moved on.
Pre-Musk Twitter was pretty bad. That's why I left it years before Musk was a factor. That said, most of the people I know who used and loved Twitter have now left the platform or just don't engage with it anymore. They say that the reason why is because it has become intolerably bad. So, apparently, it has gotten worse. I wouldn't know firsthand, of course.