I gotta love that even US hegemony is challenged on Lemmy, here not even Western superiority is a given which is at least something the vast majority on Reddit can agree on.
That said nuanced discussions seem impossible still, it's less a balanced mix where every spot on the scale is represented and more a fairly even balance of two extremes.
My current theory is that the majority of actual moderates (not US politics moderates) between two extremes just aren't interested in the debate, whereas the extremes very much are. I do gotta say that I too generally want to weigh in on things I either agree on completely or things I vehemently oppose, so I guess that kinda helps me understand how and why this is... But it makes everything seem like the extremes are the only two choices, which couldn't be further from the truth.