Not sure if this has anything to do with it, but Lemmy.ml is moderated by communists, and I don’t think they get along with libertarians.

Why do they need to be replaced? Just use lemmy/mastodon and forget Reddit even exists. Not sure why people are so hung up on “replacement” when all you need to worry about is enjoying the content and interacting. Fuck Reddit and twitter, comparison is the thief of joy.