They're probably being downvoted because presenting the political divide as an arbitrary choice between two equally valid options is a perspective that many would find naive at best and actively malicious at worst.
Politics is mess, I don't want to pretend that there's no nuance (I certainly don't agree with quite a lot of online leftist orthodoxy), and I won't pretend to have an answer for our increasing polarization, but the simple fact of the matter is that we are not dealing with two equally valid sides. "Did Joe Biden win the 2020 election?", "Are vaccines a conspiratorial attempt at government control?", "Is climate change a severe and man-made phenomenon?", and "Are LGBT people basically just evil perverted pedophiles?" are not subjective questions one can have a casual opinion on. They are objective questions with objective answers, and to pretend otherwise is simply wrong.
Again, I'm very much not saying that the vague left is perfect by any means, but you only see one side start shooting at beer cans because a trans person had the audacity to exist.