All those users are from different instances. That’s decentralized.
If this community goes down or is otherwise not viable anymore, users can easily find another, similar community, while not having to switch to a different platform or instance or whatever themselves. That’s how this is supposed to work.
Decentralization with different larger communities on different instances, with community members from all kinds of different instances, baby!
Tough guys just don’t finger snap like they used to, these days.