To be honest, based on his post history I've always considered him to be both a decent guy and a fairly smart person. Seeing him paint with such a broad brush of predetermined perception is a disappointment.
The irony is staggering - if you supported Trump, you're an ignorant racist with a low IQ, and we're here to tell you how racist and ignorant you are, because we're compassionate, intellectual, and inclusive, and you aren't. We don't care to understand any more than that, because you're just a stupid, racist, dupe.