In my opinion. This concerns child development experts, including famed research pediatrician Lester Fussman. Children and laboratory rats have a lot in common. If you let them learn to press a certain button for gratification, they'll sit there and push and push and push and push and push and push and push. And nothing else.
Kids get in a rut.
If it's Wizard Boy stories they want, that's all they'll accept. And as a result I fear they will grow up knowing only wizard boy stories, with wizard boy thoughts and habits as their only frame of reference. That sounds awful. We need to expose the children to a broad range of interest areas. There should be as many possible stimuli in the least amount of time.