Fediverse

Honestly, in my experience since I fully moved to Lemmy:

Almost any subreddit is more mature than any Lemmy channel.
This isn't just number of users (but that's a huge problem that has been mentioned here a lot), it means that the chance you'll run into a mod who is a tinpot despot is pretty high, and there is nothing you can do about it if you're not willing to sit alone in a ~~ghost town~~ alternate community.

I'm pretty sure most just don't know about us or don't care