The problem, in addition to their worries being totally unfounded, is that this hinders teachers from teaching, and kids from learning. Then kids are less motivated and they enter the workforce less motivated to produce.
Adult worries are almost always unfounded. From my reading of 1912, The Inside of the Cup by Winston Churchill, the mother despairs of young people and says to her daughter "I can't think what's got into the younger people these days. I tried to teach you so, my dear." Then comes this young lady's response (true now like then), "Cheer up, mother, the world's no worse than it was."
Photo: A teacher, right, apparently not worried about his students, plays with his students.