I do disagree with you say.
You say there is "something in the brain" of someone who recognizes this for sexual dancing, as something that is supposed to be exciting (which to me in this context is just an euphemism for arousing) -- but you don't say what that is, just call it an "ugly implication".
I say that all that's required in the brain is a passing familiarity with general society, and the same behavior/dancing in adults. That's neither ugly nor interesting nor an insight. The only interesting thing is how you first assume some sort of denial in anyone criticizing the movie, then turn around and can't even handle that I do, in fact, disagree with you, because you're wrong.