> It seems like the really good discussion places wouldn't have to carry this caveat.

Ideally, yes, but if the political views you are hoping to find are ones that overtly limit any dissent or respect for any other view (extreme absolute authoritarianism for example) then the views themselves subvert the ability to have meaningful discourse about them.

You cannot fit too much of the Overton window in any one place. And a lot of politics these days relies on entire parallel media structures so that what even happened is under dispute, let alone the moral response to them.

Wonkery can be debated; humanity can't.

I was more thinking about how all the right leaning subs have been co-opted by the alt-right gamer types and trolls. The far left subs aren't much better, but there are plenty of open minded moderate subs. I find neoliberal to be a great place to discuss center-left policy.