I’m not even sure if brainwashed is the right term since it’s clearly a deep anti-intellectualism coupled with deep resentment of established society. They have been voting for this kind of thing in the USA long before Putin got his disinformation machine involved.

You kind of need a brain to have washed and “you’ve got to remember that these are just simple farmers. These are people of the land. The common clay of the new West. You know… morons.”