You have to work Twitter. I have carefully culled a curated list of posters over many years (10+). I get a lot of great information from it that I would not otherwise get. More depth than I would ever get in the mainstream media. I also do a lot of blocking which seems to keep me free of the madness. I do follow a couple people who seem to attract nutjobs (David Simon, Dee Snider) and I follow Paul Krugman (who seems to be in a daily war with Wall Street) so I understand what you're talking about.
The only reason I'd leave it is if people have to pay for it so they leave, and if he wants me to pay for it.
Then yes, I'm out.
One of the reasons Twitter worked so well is also its downfall. It was a spare place to get info across quickly without wading through tons of muck. And that made it hard to monetize. As long as the old crew kept a lid on ads, the place would retain its relative popularity. But if it loses that charm, they're going to lose even more money as people abandon it.
Maybe these things only have the lifespan of a decade or two: Twitter becomes the new MySpace, MetaFacePlant, Instagrampa, TikTokCrok