In the pie chart 100% of people one meets disagree with ”extremist” belief of Matxism. I guess, if you move in very conservative right-wing circles, but I still doubt if this fella understands how pie-charts work.
On the general topic, most people do not have arguments and they do not know how to construct one. They cannot articulate what they believe, since they don’t really know what they believe. Most things people say are just stuff copied from whatever TV-show or meme they saw last. However, if you go around starting discussions on politics with ”what are the three branches of government” most people who actually understand the topic just walk away. I also don’t think ”hey everybody must he stupid except me” explains how people radicalise - or whatever ”idelogically crazy” means. Rather it tells more about the writer and his… problem.
I have another suggestion: just fuckin listen. A truck driver or a cleaning lady might have very original and interesting ideas about the world, if you just shut the fuck up and let them talk. Then there’s about quadrillion firebrands across the internet shouting at a video camera almost none of which are worth your time.