The sexualization of young girls is unfortunately not new. It has been going on for years (decades?) in beauty competitions. Since that went unchallenged, it was inevitable that it would spread to other types of competitions.
I’m afraid that I have to disagree that that choreography would have been appropriate for children that age, regardless of what they were wearing or dancing to. The girls are being taught to use their sexuality, which hasn’t even budded yet physically, to get what they want. That is a lesson that they would be better off never learning. But in this case it’s much worse, because their first experience of themselves as sexual beings is an experience completely devoid of love and dignity. Their first lesson about sex is completely divorced from romance or love or anything good. It is all about being competetive and displaying your body for strangers.
Quite possibly, the children don’t even understand the sexual aspect yet, but they will (probably pretty soon), and they will later realize that their behavior was “sexy,” and they will learn that that is what their bodies are for.
It doesn’t become more acceptable because it’s happening more and more often. If 6-year-old cheerleaders are doing it too, it is wrong there, too.
It is presumably the parents’ choice (more than the choice of the girls at that age I imagine), but who is educating the parents about what they are doing to their children? It would be disgusting (and enraging) to me to see a 6-year-old daughter of mine doing that, but frankly, I can’t understand how ANY father allows it. My father would have run up on the stage with a coat to cover me up, and God bless him for it!