Same people and companies that buy high-end headsets such as Varjo XR-4.

This. My friend had a triple stroke shortly after having neck manipulation done by a standin for his usual chiropractor. Luckily he survived, but it has very much opened my eyes to how dangerous it can be.

Also note that mac addresses can change automatically on iOS, because of the Private Wifi Address feature

Interesting idea for sure! Without any thought to the details or technical side of things, how do you figure the community moderators would be appointed (if the communities are created automatically)?