Making new identities is cheap (unless one grinds for a vanity address like yourself!)

NIP-42 can help but is no silver bullet, sadly.

Even NIP-05 is no defense when nostrich.house is renting verified identities at 1 sat per hour. 

Human moderation at relays is the only reason Nostr hasn't become Usenet already.

I've sent a draft of another partial solution to a friend on Nostr, if she likes it she can lobby her friends into adding it to clients.