That's the rub though isn't it? I'm going to be very interested in seeing how that goes.
I personally have no interest in Nostr if it becomes anything remotely like existing social media. Sane defaults for new users are one thing, but the majority of moderation needs to be done by individual users.
The moment it becomes possible to effectively block someone from being discoverable, Nostr ceases to have a legitimate reason to exist imo. I'm hoping smarter people than be will be able to walk that line, and navigate through it.