I thought the same thing when Voat started as a mirror to Reddit. It was similar for a while but every time a troll or Nazi was ejected from Reddit they migrated to Voat. Eventually I was one of the last liberals there. Is there anyone maintaining order here or will it be the wild west ?

"here" is relative in the Fediverse.

Here? sure, but there will be right-wing Lemmy instances. It's almost a rule of existence at this point.

I don't totally understand the fediverse yet. So an instance is basically just a portion of a website on a certain server, right? And all the instances communicate with each other to create one website?