My friend is a photojournalist who covers the hard right, and has talked to thousands of them, including at Charlottesville unite the right march, and he says they're all dumber than a bag of hammers.
The mental gymnastics required to remain conservative is impressive. I think much of conservatism is letting your brain rot and buying into the conspiracy.
I suspect some of these people were not dumb originally, but it's an all consuming cult. I wonder if we should start treating conservatives like cult members and try to break them out.