You seem to be viewing the fediverse as a blob, but it's actually a federated network. There's no need to join an instance if you don't like the moderation!
It's the same kind of leg work that the existing status quo of the major mastodon nodes had to undertake, and there's no reason anyone should expect that the existing status quo of Mastodon nodes would help a mastodon federation ideologically opposed to their own succeed.
The point of federation is not to force people to talk to people they don't like (for whatever reasons).
And if what you’re seeking is the privilege to compel other people who take responsibility for setting up and administering such spaces to carry / broadcast your unmoderated views regardless of their own, what we’re talking about isn’t really any principled kind of liberty.