We have the same problems reddit does. It’s just that it’s a smaller userbase and downvoted comments don’t disappear here like they get pushed down on reddit. So you don’t get downvoted as much, but your controversial or unpopular take remains visible for opposing opinions to attack. And yeah, there are mini-brigades here too. Make a comment about a subject that has importance to a particular instance and you get insta-downvoted multiple times, but your post will probably recover as the rest of the groups view the conversation.