Everything you see on the map is actually from OSM except the places people create. The purpose of having places outside of OSM is that they are verifiably owned and controlled exclusively by the owner's private key and stored on nostr. There is no need for an individual to depend on a community-edited OSM database. You can't truly own a place if it's in OSM; anyone else can edit it.

I want to allow people to publish not only real places but favorite places, personal places, etc. Not all of these belong in the OSM database.

However, I see the value of OSM and it may make sense to have a feature where people can cross-publish their place into OSM. I appreciate the questions. 👾👍