[fuzzfactor]

>sounds like what you want is just a different content policy

This could always be the heart of the matter.

Whether strictly moderated or casually self-adjusting, once an extreme or somewhat non-mainstream "groupthink" starts to dominate, numerically or some other way, then any opposite viewpoints will be repressed to an increasing degree.

The best you can probably do is to engage where you are compatible with the content as it has already devolved.

As I implied in my other comment, probably the only time there is any chance for nothing to have devolved in terms of free speech, is if you get in at the very beginning. Or with greater certainty, it does seem intuitive, hosting it your dang self.