I've known extremely smart people who didn't complete elementary or high school and I've also known dolts with doctorates. I've listened to people who made enormous sense in broken or ungrammatical English and have also heard individuals with many letters behind their name who spoke eloquent nonsense.
The list could go on: minorities who are racist, tough operators who are sensitive, and old ladies with more street smarts than a gang member.
Titles, credentials, and group identities can easily cloud our view.
Take each person as an individual.