Seems a bit of an extrapolation, no? I never read Ozymandias in school, but I'm certain I've read very worthwhile literary works you've yet to read also. The notion that not having read some arbitrary, singular work implies general cultural ignorance is, well, about as silly as the statement sounds. It's almost as if different places and different times have different things in their English curricula! ;)

Going from "has not read a particular work" to "prefers the teat of the entertainment industry" is a bit of a leap.