Hold on, yes we do want every community to exist on lemmy and the fediverse. If all that people see are memes, technology, games, asking questions, politics and news all of the time that's available. They won't help grow the fediverse. The purpose of the fediverse is to offer people platforms to get them off the shit-world that centralized social media has become. So if we have nothing else to offer them but those things, of course the fediverse won't grow.