That's even a common trope in sitcoms. The husband is a loveable but bumbling idiot, while his wife is the voice of reason who frequently needs to save him from his own bad decisions. I wonder if the shows are imitating life, or the other way around. My wife did her master's thesis on discrimination based on communication, and in her research she found a study showing that the constant depiction of people with a southern accent as being stupid leads the majority of southern children, as young as 10 years old, to view themselves as inferior to people without the accent. Maybe the same is true with TV shows and movies frequently showing males as stupid.