To be fair, nostr is a deep topic on nostr. A network with10-20k daily actives can only really have 2 or 3 topics with enough depth that people think that network is a worthwhile place to talk about them. The rest would be just Potemkin topics. Sure a few people can post cool shit about, say, cars here, but that will not make nostr a rewarding place to talk about cars. People will go to Reddit or somewhere where they feel there's actually a depth of conversation to be had, and one on the specific car niche that they're interested in. (Here it would quickly devolve into a much of "that's cool" or "love it" comments from people who don't know what else to say.) In perspective, there are many Facebook groups and Reddit subreddits with more real people dropping by each day than all of nostr. So it's pretty understandable that conversation here circles around just a few topics.