I agree, and that's what I'm worried about: They aren't reading these books.
I liken the popular books - Twilight, Hunger Games, the Perks of Being a Wallflower etc. - to popular music. They're fun to read, and appeal to almost everyone, but they're lacking in real depth.
I mean, I'm 15 and I read constantly. I use my phone to read books and use Pocket for web stuff constantly. But whenever I tell my friends about books or blogs that I like - much like my music recommendations - they just roll their eyes and go back to whatever.
I'm not sure. This generation isn't at a loss for things to read, and every device we carry has the ability to read things, but maybe it is viewed as an adult pastime, I'm not completely sure.