Ya, I think it'll be possible. Say with relays for example. Someone very plebtastic with some plebfluence runs a relay and has a swarm of other plebs as moderators, who block and delete events by reporting them. Some may cry 'muh censorship' but it's not censorship, it's just creating a pleasing feed that a set of individuals agree is what they want. Then you have a clean plebchain feed that has no spammers clogging up the spirit of the hashtag that the group agrees on 🚀
relay.tools can do this now, and once I implement paid relay support this will help for the mods so they don't have a torrent of new keys coming at them too quickly..
Prob gonna need clients to also help expose nice UIs for relays instead of hiding it away.. like a relay set *just for plebchain.. that type of thing.
Still early, spam hasn't quite arrived yet in the amounts I think it will, but it's gonna come eventually. Reply spam, hashtag spam, public relays will be a raging river of it (kinda like how nostr chat rooms were DOA cause spam took them over).