Educated people are more easy to brainwash actually. They’ll believe anything the establishment tells them because they spend more time in school following directions and going “by the book” - they excel at this.
Less educated people need to learn to trust their instincts, and be skeptical at all times.
Politics is about really simple stuff because you can’t over complicate at such a high level of abstraction.
I think there is no relationship whatsoever between education level and common sense. If anything the correlation is negative. Highly educated people don’t need common sense because they deal with complex things.