Also I don't know if it's obvious to folks, but fedi can't be a global town square. Attempting to do it is a fool's errand. Architecturally it doesn't work. The infrastructure to do it requires a kind of global consensus which fedi (activitypub specifically) does not have.

A better analogy is that fedi has some very large cities and many more small towns. This mirrors the real world, where big cities aren't for everyone but many people pass through big cities at least a couple times in their life.