"Whats wrong with being dumbed down?"
Education can be summarized as the process by which society transmits its accumulated knowledge and skills from one generation to another in the form of a structured presentation (most commonly, lessons within a curriculum).
To 'dumb-down' or simplify part of this knowledge would defeat the very purpose of education.
Youth are suppose to deal with failures in the course of their education. Giving every student a gold star and a hug doesn't EDUCATE. They don't know enough - that is what education is suppose to remedy!