By definition, people who know more things are smarter than people who know fewer things. That's just how it works.
For centuries, people have striven to improve themselves through the acquisition of knowledge and skills. It is a quirk of recent generations that so many members take pride in their lack of knowledge.
I'm repeatedly bewildered by my Millennial colleagues who proudly say "I don't know what that means," or boast "I don't know what that is" with no sense of shame.