As depressing as it sounds, most Twitter users actually like Twitter. They're fully okay with all of its dystopian features (some even idolize pre-Musk Twitter). Mastodon is a break from Twitter in many ways, whereas bluesky is just another Twitter in their eyes (many of them probably dgaf about federation and ignore it).
Twitter and YouTube are the least toxic social media platforms I use. I know toxicity exists on both but it is not being served to me. My feed is what I want to see and only that.
On the other hand, something like Reddit or Lemmy needs a huge amount of curation to keep the feed even half decent.