The serious point is that Mt W avy victims possess an impressive list of educational and professional accomplishments, i.e., very smart people can do very dumb things.
climbing like driving truck, lifter, and some other works are not in the same range as physic and chemistry. In physic and chemistry, it is possible to study and learn formula and have success.
It is a question of time. One can study for five hours and go to the exam or you have a second to decide to go to the right or left to avoid an avalanche. As the decision are faster, the brain use shortcut to react to a situation. Those short cut are not always good. A shortcut is call an heuristic.
Yes it is possible to make your own shortcut, by climbing....but most people, and particularly those who take a course to be safe, instead of an addition to your experience, are going to use those heuristic which is easy to teach.
So they are not stupid because they made a mistake, they are stuypid because they follow heuristic.