Idk about others but Nostr doesn't have any kind of mutual culture. People around the world can have very different kind of use cases and minsets when using the Nostr.

Maybe the culture could come up when looking at the specific use cases or applications built on top of the Nostr, and from which point of view to look at it. One app for example can use different kind content filters than others and such invite specific kind of people (and culture) to use it 🤔