I think we should stop seeing Lemmy as just a substitute for Reddit. Lemmy can be it’s own thing, without having to do ‘reddit-like’ stuff.
Imo, I don’t think the karma system is really necessary (it doesn’t even make sense) and the upvote-downvote is good enough to filter quality posts.
I don’t know why the mods of r/AskReddit still accepts these kind of posts when it would be more appropriate to do an NSFW r/AskReddit (if it doesn’t already exist).