I don’t think there’s any less karma farming on here. People still look at their up and downvotes, and I don’t think there was a legitimate industry for selling high karma accounts on Reddit. Not one that would make a difference at scale anyways.

The problem with Mastodon and Twitter is structural, it’s based around following people, not topics. It is inherently problematic because a) personalities and status get elevated over the logic of the argument, b) following people instead of topics inherently feeds people’s egos in a problematic way, and c) a given person can use their followers problematically. On Reddit / Lemmy by following decentralized topics it eliminates most of these, though the mods controlling each subreddit can exercise some of the same influence.