I think it's very true to a point. Up until 9, 10 years old, for sure. After that, they will definitely outsmart the older generation and they will be able to see whatever they want to. So along with keeping their eyes pure until that age, it's also important to teach them morals of what is right and wrong. So that when they are old enough to outsmart the parents, they stand strong and dont have to hide anything, because they dont have to outsmart them.