I disagree a bit that children have stopped reading because it's the "Entertain Me" age. I agree that it is the "Entertain Me" age, but boooks are entertainment, but schools have stopped challenging young children to read, giving them only the regurgitated bird feed that's one-hundred percent politically safe, "everyday vocabulary", and plotless. Honestly, have you seen the trash teachers force school children to read? If those are the only examples of books that they have, no wonder they don't seek any out on there own.
On the original post, that's very interesting. I was just thinking last night how far fewer YA books are written for boys than for girls, though quality YA books are lacking for both genders, in my humble opinion. I don't mean to stereotype readers at all, most books are gender-neutral, but I'm referring to books like The Sisterhood of the Travelling Pants and The Baby-Sitters Club series that are marketed directly to girls.