Reddit

They're digging their own grave. Subreddits grow because of good moderation, replacing the moderation will result in a much lower quality experience for everyone involved.

This is just part of the slow slide into being another Digg or MySpace. People will just move to the places that host the quality communities. It's trivially easy to move to Fediverse services and all of the top content on Reddit is crossposted to the relevant lemmy communities.