What could be the reason though? Too much abstraction these days? I have worked with experienced devs that have a background in Computer Science, who don't grasp basic concepts (especially when it comes to computer networking). Could it be that the emphasis in current CS education is more on theory rather than application in the real world?
These days, there are more Software Engineering curriculum style studies popping up at Universities that get rid of the hardcore academic CS fluff you'd only need if you plan to stay in academia, and focus on real world applications. Perhaps that would help more.