its just too new (not only nostr, but clients with community functionality is new within nostr), unfortunately you'd probably need to be willing to bootstrap it pretty hard..engaging individuals on here, getting people in other social media to cross over, fostering the community as the tools are being built in real time. It could be a very long time before it looks like reddit, but it would be incredible and way better if one did it on this protocol and not one that is completely captured 🤙