Can you state your point more simply?
This in itself is negative, but the ramifications are profound: the landscape of ideas is never realized by a material percentage of the students. And those who could have contributed worthwhile insights have been taught to not contribute.
You mean like teachers? Teachers bullies kids that answers wrong in class, so if you try to think for yourself rather than answer according to the book the teacher often makes fun of you and the rest of the kids laugh at you for not saying the right thing.
Just making teachers not do that would probably go a long way to changing the culture. Kids feeling fear of being asked a question in class is a strong signal we are doing something wrong.