I see no reason to go so far as to call the actual students in question "clueless" - but there is definitely serious bias in where certain companies do and don't hire. Apple recruits heavily from Stanford for CS, but recruits from MIT for ID, for instance. Some companies only look at MIT, or CMU, or Berkeley - or hire there "first", for no other reason than the founders might have gone there, and thus feel better equipped to evaluate the curriculums and students from those schools.

It's interesting to see where the top 1% of CMU kids go, but looking at the top 1% of every top CS school independently of each other would yield dramatically different results.