it is odd, but I chalk it up to the fact that bret is a young man who's poured his productivity into a field that's fairly broad already. can't fault him for not being as well read in other areas so far in his life, but i'm sure he's interested in getting around to enjoying literature some day
you make much assumptions about how well read Bret is in other areas.
I don't find it so odd.
If you read more than a few interviews with professional writers of literature, you'll see them mention how they don't read much fiction but a lot of non-fiction.