This is part of the ongoing slutification of young girls that is a societal trend. Eight year old girls doing burlesque dancing-what could possibly be wrong with that?
The other grotesque part of this story is the instructor. So let's re-frame. An obese, non-professional dance instructor (see photo) is encouraging pre-pubescent girls to get slutty on the dance floor/stage. I'm pretty square, but I can't be the only one who thinks there is a bit of a problem with that.