If you care so much about the principles of software freedom, then you are quite political yourself. I don’t see why you’d have a problem with something like Anarchism in that case. Maybe you just aren’t familiar with what philosophies like Anarchism are really about.

Mastodon is not an organization that controls what anyone posts. If you’re a free software aficionado, you should know that. People will post what they like, it’s up to you to choose who to follow and curate your own feed.

It sounds like Xitter politics would be more up your alley, so just use that then.