The problem with the rabid right is, in part, brain physiology. Their thinking and worldview are anchored in the amygdala. It’s where our feelings of fear, anger, hate and aggression originate. Therefore, it’s always about threat and attack. Everything is always very black and white.
When activity is situated in the amygdala, it shuts down the higher thinking functions of the brain. Therefore, regardless of innate intelligence, the rabid right cannot really think. Instead they are only able to join dots with anger, prejudice and righteousness.