I'm not gonna make any point about actual politics, but It's a fact that political beliefs heavily correlate with education so there's at least some truth in his point
But I have also observed educated people supporting some parties, ideas or policies rather mindlessly seemingly as a matter of differentiating themselves from the opinions and interests of uneducated.
It's correlation, it's not direct cause and effect. The average guess of a group of people is closer to the true value than most of the individual guesses.