Mods on Lemmy still have to remove anything that violates the TOS and off topic posts / comments, but should be much better than reddit. We've already seen admins are deleting posts and comments as well but again only those not following the TOS.
I commented on a video of a Nazi getting punched "I will never not upvote a video of a Nazi getting punched"... and banned for inciting violence... but the video stayed up
I got banned from r/StarTrek for saying I preferred the Klingon design in The Next Generation to what they did to them in Discovery. I was banned from r/baseball once for saying that betting on sports was bad for the integrity of the game.