Eh, there were some nice things on Reddit. We don’t have to be a clone but we don’t have to resist everything that looks like them. I’m explicitly here because I wanted a forum-like social media that wasn’t Reddit; I wanted a Reddit replacement. I would like to leave certain artifacts of Reddit behind, but I do like actual Reddiquette (that admittedly did not get followed in practice, it does not here either) of upvoting good contributions to a conversation (including opposing opinions) and reserving downvotes for people who come in with hostility, spam/off-topic posts, etc. I liked communities there where I could talk about things I was interested in.
“Please edit your post title to [whatever it should be edited to to reflect community standards]” in the comments from a mod would also resolve the problems you have. In my opinion looking anal about rule enforcement > potential for abuse.
Although I do think if flairs are implemented, mods changing flair would probably be a good option—far less room to change what the original poster is saying to make them look bad.