I think people leave because of the lack of niche communities.

Reddit niche communities are like crack. None of the fandom communities are active here.

Does piefed have good moderation tools?

I've gotten suspended from Reddit for hurting fascist's feelings, most recently because I said what I wished had happened to the leaders of the confederacy.

Reddit will let blatant hate speech and active calls for violence against minorities stand as "not violating any rules" and the only reason any of the subreddits aren't overran by that crap is the individual subreddit mods remove comments and ban people, but that only goes so far as they are all unpaid volunteers.

The kind of people that do get banned by Reddit for being bigots have to say stuff that would actually get them in legal trouble, and usually those are the ones that are actively threatening specific people all the time because they think death threats are an effective debate tactic when they don't know what they are talking about, and they never know what they are talking about.

Those people end up being a special kind of asshole so when they come to Lemmy they end up doing the same, but with federation they tend to endup more on the openly fascist instances that most sane instances don't federate with.

I received a "promoting violence violation" on reddit for referencing "Surviving The Game" and other tropes of where rich, white, affluent assholes hunt human for sport.