Unfortunately more than a century of presumptions in psychology have been false. Traits (a) disagreeableness at the expense of agreeableness, and (b) systematizing at the expense of empathy, turn out to be as necessary as (c) conscientiousness and (d) intelligence.
The more direct explanation is that no matter your intelligence and conscientiousness if you rely on agreeableness over disagreeableness and empathy over systematizing then you literally “can’t think scientifically”. ie: the vast majority of females and beta males.
THE PROBLEM
Conservative and disagreeable males over-rely on their intuitions, biases, and selection bias in information acquisition. So a stupid disagreeable conservative is worse than a stupid disagreeable leftist.
And stupid disagreeable right is the cancer that prevents the right from victory.