Oh yeah. At least in Poland, among the millenials. When I was getting back into it a few years ago I was rather "one of the weirdos" on the bicycle lanes. Even though "nightskating" groups have already existed it wasn't that common sight on a regular day. Few years later I stopped saying "hi" to other skaters because the other side was more often weirded out on me saying "hi" than seeing another skater - clear sign that it became more popular

As for a skate group - maybe that would be a use-case for fedihood?