I’m an-cap so my takes aren’t original or unique to me.
It took me awhile to get it but for fun an-caps get deep into the weeds having conversations like this. I’d just apply the same principles to Nostr.
#Nostr clients could hire a private security force that just handled bad actors. Their entire job could be to watch for bad actors and make them feel unwelcome. Just one idea that wouldn’t involve censorship.