If crap books are pulling kids that wouldn't have been literate into reading, that's good. If crap books are crowding out quality, and causing kids to read garbage when 20 years ago they would have read something that wasn't wish fulfillment populated by stereotypes, that's bad.

I think that the internet is good because more people are reading because of it. I don't know that young adult trash is attracting people who would have instead read good things if it weren't for massive marketing budgets aimed at children. If it is, it's contributing to making (US) society stupider and less competitive.