The only people that voted for him that aren't dumb are the abnormally wealthy who knew they could benefit financially. And they represent such a small percentage of the whole that it's reasonable to simply state all Trump supporters are fucking idiots.

And you could even call that small percentage stupid because they're shitting where they eat. If you live in a country you are actively voting to make worse for the vast majority.....well, that's bad business in the big picture. They're focused on short term gains.