Yeah Hunger Games, Harry Potter and Twilight skewed older but going to those movie premieres there were a ton of younger people too..and older people lol.
I'm just not sure Disney can do those types of films (sci fi-ish, age group, etc) well enough nowadays that is. I feel like nowadays maybe they should hold off on producing them. I'd have a lot more confidence in them, honestly, if Disney wasn't the one doing them. That's not to say that other YA novels turned films have always produced box office hits though.
On the other hand I can't fault Disney too much for trying at least to bring variety to the table considering Marvel, Star Wars and Pixar films they've had recently and in the future.