(from Cory: The concept of intelligent people who are tRump supporters is a curious one, I can't figure it out.)
Why do you find it arrogant for Cory to express his honest puzzling over this? Of course, what Cory has overlooked is that, just because a person is intelligent, does not mean that person is not racist to some degree, nationalistic and isolationist in sentiment, self-serving, and possibly even a total hypocrite and arsehole. The GOP is full of such people and there are even occasional Democrats. In general American politics does not encourage or reward the positive virtues.