I think, nostr might become twitter, instagram, or reddit, because it's just a protocol, depend on the client on how it would be use in the future.

I hope nostr should become a public speech space for everyone, it should not become communities, cause I'll just go to reddit for it.

The advantage of nostr is it doesn't have a specific algorithm, it's all depend on the client. It's just like a space to broadcast your information, the information could easily be interpret as community, a twit, or even a picture post.