You are missing the point. Sidestepping the whole spam thing for a moment, Nostr does not change with what fiatjaf is proposing here. Censorship resistance in Nostr means freedom of association. I can throw everything an the kitchen sink blocking and removing your posts from my perspective because i don't want to engage with you, or want you in my feed ect. and at the same time you can have all the parallel conversations with others about my posts you want, simply using different relays. You don't get to force yourself into my world, i can't banish you from others. As to whether you think blocking voices, or for what reason or whatever is 'bad' or whatever does not matter, that is for everone for themselves to decide what, when and how they prefer things.