This sort of misses the idea of competency not being cross compatible to different areas, or over confidence causing blind spots where you may otherwise be highly competent. Some times the best marks for scams aren't the stupid, but the ones smart enough to delude themselves into thinking they know how to take advantage of a situation, and often dig themselves further in thinking they can work their way out.

Ultimately what we all need to work on, smart or stupid, is authentically listening to feedback and self-reflection.