Our college-age nephew is a huge Star Wars fan, but he liked Star Trek 2009; so when he visited, I played him the (second) pilot of the Original Series. He was polite but yawning by the time it was over.
He had to ask me whether the episode was well thought of, whether people thought it was a good episode or not; I guess he couldn't tell for himself and wanted to know if it was representative.
Would it have helped to mention that the 2nd pilot was (maybe still is, I dunno) the only TV episode in history to be deposited in the Smithsonian?
With the surprising-to-me large percentage of youngers who don't seem to 'reach' TOS, I'm wondering if any of them can get through FORBIDDEN PLANET or THE DAY THE EARTH STOOD STILL or COLOSSUS THE FORBIN PROJECT, to name 3 pretty solid pics (even if FP has got some 50s-isms that are flinch-worthy.) I'm thinking 2001 would be totally off the table for most, if it is a matter of attention span.