I don't think they are more knowledgeable, don't expect them to be so and I am not surprised that driving schools teach driving rather then how cars works. Nor I am outraged over the fact that most people are not experts in everything and don't have deeper knowledge about my profession.

I think that all the kids should be taught enough about computers to know it is no magic, that it is learnable and actually easy once you want to do it (and you dont actually need to be genius to learn it as many believe).

However, I really don't think they all need to know Linux administration.