If you take a college course on Women’s History and Sociology, this topic is mentioned a bit. First of all, proportionally speaking, there are a very few source materials written by and for women, which gets even more accentuated the further you go back in time. Which means us today are left to try to make a complete picture with very few pieces and loads of bias towards "The Male" side of societies. Additionally, the sexual repression in society of Victorian times is exactly what lead to an increase interest in all kinds of ideas around human sexuality, including the work of Sigmund Freud (eventually). Why? Because people often times are attracted or curious to the forbidden, to the taboo topics.

Not to mention, the expansion of European colonization mean an imposition by force of a very specific brand of ideology with certain concepts of Christianity interwoven. We are still living the after effects. There was an active extermination campaign of other cultures, hence we have incomplete pictures of the mindsets for these topics.