They're not stupid, they're greedy and shameless.

I was just following the parent's wording. I don't really think they were stupid, or even necessarily greedy and shameless though some no doubt have been. I think mostly it has been ignorance. Likewise the general voting population: I don't think they've gotten dumber, but I do think they've gotten more misinformed. As the saying goes, "It ain't what you don't know that gets you into trouble; it's what you know for sure that just ain't so." Never has that been more true in American politics.

They are creating a world that is inhospitable to them.

They are stupid.