'We' is the subsection of the fediverse that federates with the server I'm on. It's a sentiment that I see everywhere on mastodon, not from any particular instances.

The fringe-er instances are more likely to block by default. It's almost an issue of fediverse fundamentalism. A lot of people think large instances like .social are antithetical to what mastodon is trying to accomplish. We have huge, enormous centralized servers in the middle of a decentralized network. I think you can see how that sentiment would come about