I think everybody realizes that the hero-heroine dances are there to make up for the lack of sex that censors do not allow. I don't think any film person has admitted it. Recently, Edwina Violette spelled it out
“Yes I would imagine that the Hip Shaking & the Top
Half of the Body Shaking & any part of the Body
Shaking done by The Female Dancers especially in the
Film Line is to spell out ‘Sex’ from Beginning to End"
Now you know!