According to Goodreads, I've read 438 books so far (it's probably way above that, since it doesn't have that many Spanish language books...), and I'm only 32. So, whomever is reading 12 books a year is being lazy :)
However, most are the literary value equivalent to your average sitcom :)
I think I read that many books in high school. b^)
My rate has really plummeted recently, but it's not as though St. Peter is going to decide my case based on whether I read the seven volumes of À la recherche du temps perdu in the original French. When you read for enjoyment, no one is grading you. The "real literature" thing is odd.
However, most are the literary value equivalent to your average sitcom :)