People don't want to understand. Earnestly listening means you might change your mind. There is nothing to be gained "strategically" by listening. Claiming to want open discourse and free discussion is a tactic promoted by those who would lose any popular poll or vote. Further, most people don't hold their opinions because they've thought things through. They are told "good people believe A," and they want to be seen as (and think of them self as) a good person, so they espouse A.
It's one thing to wish people were more rational and less tribal. But to really not understand human nature after the last decade? The author is either naive beyond absurdity or feigning ignorance as a different form of virtue signaling.