ToS for use of clients != ToS for signup
I can checkout Amethyst source, fork & modify it, run my own relay (w/o ToS) and have my way with the protocol. If I were inclined, default to Tor and share CP to hidden service relays only and have my own little nostr loli club or whatever.
nostr had its share of loli stuff here and there and yet I don't see the pedos flocking to nostr. You don't need nostr for pedo stuff nor drugs. It just isn't useful for any of that. But you could if you wanted. That's also freedom. Permission-less.
Good luck with pubky. I'm really not trying to attack you but I fail at getting your pitch here.