Ya I don't really get the Twitter paradigm. Look how it pushes people to have a whole account dedicated to a single thing, and they're afraid to say anything to 'loose their following'. It's broken. Nostr can do better. Nostr is not just a Twitter ban refuge, it's pandoras box that will change the way we use the internet.
Topics require human curation to be useful (and possibly AI assistance) but at the end of the day, a human decides if something is on topic or not.
Hashtags are not good enough by themselves, but super close.. if a relay team decided to curate some hashtags, and delete off topic spam posts for example, *and then a client were to specify which relay(s) to follow a hashtag from, then all of a sudden you could have a feed of that topic that would be close to on topic. There could be multiple relay teams doing this, and you have topic merging but still no spam.
Anyway, I may have said it before but I like reddit/irc/group chat a lot more than I like Twitter. So I'm interested in relays supporting this use case.