No because when I was 12 I was listening to chart crap myself. If you're expecting 12 year old girls to be well versed in mature music your expecting a lot.
If you want to sit down and play Billie Holiday or Jeff Buckley to 12 year old girls then I'd suggest you where a little sadistic. Their life experiences don't connect with the subject matter and they're not mature (or even jaded) enough to find it appealing.
I get your point, but I am imagining your thinking that if you sat everyone in the world down and played them all the songs you like that they might not of heard then they'd end up agreeing with you. But they won't, because the music you like you like for a certain set of reasons. Either it speaks to you emotionally, or reminds you of something, or has a certain set of chord patterns or structures that you particularly like. All these things are relative to you, but probably not to them.
Therein lies the complexity. If you can remove yourself from your upbringing and other influences to exhibit empathy while taking music in, you then have a clean palate to appreciate and understand it. Even if you don't 'like' it. Right in line with Emerson's 'Transparent eyeball' depiction... With this comes clarity, actual knowledge. And I'm not getting into the technical or academic aspects here. Most classically trained prodigies I know or have known don't get pop music at all.