I agree that it's trash but for another reason. It's exactly along the lines of theories like "everyone behaves selfishly", or "evil men rule the world". There

I agree that it's trash but for another reason. It's exactly along the lines of theories like "everyone behaves selfishly", or "evil men rule the world". There is some truth in such theories, but only in a glass-half-empty kind of way. They tend to become self-fulfilling prophecies in that they produce the exact kinds of behavior that they predict. Why not, instead of railing against stupidity, work on educating people to overcome their (perceived) stupidity?