I didn't mean to suggest that you're somehow unreasonable in how you run your server, I was mostly commenting on the larger concept of mainstream Mastodon.

Indeed, right to far-right doesn't stand a chance there so they get blocked. They effectively move to a darkweb situation where you never see their content unless you're really trying hard to look for it.

What remains, mainstream Mastodon, is moderated to the left, if not far-left. Or perhaps it's a very vocal far-left minority silencing the rest. It's of course not universal across the entire network, but roughly the vibe of the network.