I don't really think there has been -actual- increase in condemning of child sexualization- I think it's probably about the same as it always has been ("the music! the internet!" etc.), but the mainstream sexualization has increased- consider Britney Spears to Miley Cyrus.

I remember reading a joke somewhere that Disney's formula was "stars the kids can relate to AND the parents want to have sex with" and that seems to be the pattern.