I don't know if this would have any effect, but splitting content distribution and content moderation, in the sense that all providers are free-for-all, but then users would subscribe to block-lists depending on their preferences (just like one does with an ad-blocker), is a notion that interests me. How resilient it is against bad-faith-actors depends on the implementation, but I believe that if you try to do more than just a naive blacklisting, and instead analyse networks, you could manage to get relatively far.
A funny notion I know from some image boards is having a list of substitutions, that replace frequent buzzwords with silly phrases. After a while, you get what someone wants to say, but they frequently get annoyed their messages don't get posted the way they want it to, which is amusing.
There is some perception bias there, because you won't hear that much from people who don't want to use the term (like me), unless they engage in a pointless meta-comment like this one.