I didn't read the 6 pages, but I'm going to blame this on the media, specifically music. Just listen to the lyrics of some pop songs today, and the image the artists portray.
The parents of these young kids are getting into this music, and that's passing down to very young kids. I'm sure in their heads they're just curious and experimenting but they don't know at all what they're doing I'm sure. I mean, it can't be that great since most kids don't go through puberty until 13 and up.