Lemmy has been a good enough replacement for Reddit that I haven't gone back to Reddit, especially since Voyager is a near-perfect replacement for Apollo, and the other apps I've tried are great in their own way, and enough people came here that I get my fill of shitposts and technical content.
Unfortunately, I cannot say the same for The Site Formerly Known As Twitter. Mastodon just doesn't cut it for me. I stay away from the political crap and don't really care about celebrities, but the art community is still on X, especially Japanese artists. Mastodon seems to be mainly people who want to complain about Elon, people who complain about conservatives, and people who want to live like it's early 2020 for the rest of their lives.
It's getting a little better with mastodon.art growing, and the third party apps are helping me get into it a little more, but it just isn't there yet. Following hashtags helps a ton, so at least I get cats there.