For the record, I fully support what the remaining mod team is doing, they are a wonderful group and I trust them completely. I don't regret the choices I made, only that my actions got a few other mods shit canned in the process.
Imagine hundreds of Reddit sites with hundreds of communities (subreddits) each, that's the fediverse (federated servers).
They are called federated servers/instances because they are connected, their uses can interact (vote and comment) between each other.
For example, you are @djgucci@ttrpg.network commenting on the RPGMemes community on the ttrpg.network, but I'm from the lemmy.world instance commenting on this community. This also means I can have a RPGMemes community back on my instance.