I have a slightly contrary opinion.

In my experience, the smarter someone is, the more entitled/bratty they tend to be (especially to service workers or people they look down on).

On the other hand, “dumber” people (or just poorer people without a knowledge job tbh) tend to be more screwed over by society and may be more reactionary.

Eg. A swe might talk down to a waiter and be demeaned while they work, but a poor person may resort to yelling at a bank representative on the phone because that mistaken $10 charge affects their ability to buy groceries, and it happens all the time.