@ZachWeinersmith The answer to this is in several parts, I think.
First off, while the server you're on doesn't 'matter' in any real sense, it's still your neighbors, and they can vote you off the island, and if they are unpleasant, you can be tainted by association. So you have a vested interest in maintaining positive relations (or at least justifiable ones), among (reasonably) small communities. Smaller groupings of people are inherently easier to self-govern. 1/x
@ZachWeinersmith
So it's a community of micro-communities, rather than just a wild swath. This leads to a lot more tonal shifts.
Secondly, and this is more important, there is a -lot- of moderation going on, you just don't see a ton of it. There are fediverse nazi servers, and troll servers, and everything, they just got defederated. A single person who's just problematic gets shunted off the non problematic servers too. The -effective- moderation team is actually huge. 2/X