They are not just harmless "trolls", they are haters, they are transphobic, they are gender fascists. I have even seen neo-Nazi profiles here, always duly hidden behind an anonymous profile, like this one, for example:
https://primal.net/e/note1m7rarveugfv5gyxy7v3qjqgm87sdpc4czw9qfptgwzj2v5nmwtlsvm4nlr
But that's okay, if you want to keep thinking that Nostr is a wonderland, go ahead! Good luck with your denialism!
You should not forward that trash and instead mute it. Personal responsibility takes the place of centralized authority here.
On any social network, you can mute whoever you want. This is not exclusive to Nostr.
What's the point of silencing someone if they create a new NPUB with each "block"? lol
That would need to be dealt with like any other kind of spam