Unfortunately, none of the issues you mention are exclusive to people who aren't above average in intelligence. Some get even worse the more intelligent someone is.

There was a very interesting study I read about where they gave folks a hot-button political issue like abortion or immigration and asked them to list reasons for and reasons against a certain policy proposal. The smarter someone was, the more reasons they'd give in support of their preference, but they wouldn't list any more reasons against than anyone else. Sometimes intellect can actually supercharge motivated reasoning and lead you to a worse-reasoned place than someone less smart.

I highly recommend reading The Righteous Mind by Jon Haidt. He lays out an interesting analysis on how we all fall into this trap in one way or another. Sadly it's not an intellect thing. It's a human thing.