This is the question lolol. I often wonder this.

However there are some genuine communities here, not that many but perhaps promising.

Check:

#Meshtastic

#siamstr (Thai community on nostr)

There's a bunch of #monero people

And scattered about the place some privacy-focused people.

There's a #christian community

There is a possibility with the setup of relays you could have communities who can't / don't want to be found. I suppose this is unknown.

Hopefully more emerge tho.

But yeah you're not alone in this conclusion.