That’s what you have with the Fediverse, you can participate in a community that’s self governing and follow their rules or set off and make your own.
I’m curious how you think removing mods would go however.
Say a user spams CSAM material, how does that get removed? Do you have to wait for a plurality of users to agree (slow), can anybody remove anything instantly (easily abused), or can nothing be removed? (Illegal and also fucked up in this example).
Mods a job not a hierarchy, what’s needed is good public controls to choose mods.