sexualising kids dancing


so I saw a video of a little girl (about 4/5) shaking her ass on Facebook. she's dancing like the way most woman dance in videos these days. (screenshots below).. when I watched the video I was sad because I feel that this is just the way society is going. children are exposed to this all the time. but when I read the comments underneath the mother was getting a serious amount of abuse. people were blaming her for teaching her daughter this and subjecting her to it! personally I think this kind of sexualaisation is everywhere these days and we can't escape it! what do you guys think?