Well I think it's a good stance to take tbh.
I'd like them to tackle music too.
Just look at the crap that Lady Gaga sings about. Poker Face.....a song about bumping uglies with her boyfriend while she's thinking about other women.
And I find it extremely uncomfortable that my 10 year old daughter is innocently singing along to it.
So yeah, I think its a good stance to take. I'm no prude by any means, but I think things shouldn't be overly sexualised unnecessarily and advertised as such. Not when it can have such an impact on impressionable young girls.
Yes, it is a parent's responsibility, but it's kinda hard when you're fighting a multi million dollar ad campaign with a 'few words of wisdom'

(OK I generalise but you get the jist)