Look at the history of it, and how it was presented in the 1700’s.
It was more about having multiple sex partners for men.
what made sex so much easier for me to obtain was the PILL not women's lib
women's lib did make women think they could act like men and be more openly randy...that is true but that is not why it happened
it happened because frustrated...mostly Jewish urban and bored suburban women (Lilith types)spearheaded a movement for more job parity and just sorta lived out this anti man sentiment they had harboured and if you look at most of them you can see why...most were never asked to the prom etc
and it went hand in hand with their red ideas about society anyhow
then other American women and media and Hollywood jumped in and it became all sorts of stuff and sold girls so much BS and eventually led to how screwed up we are today..in this area and empowered the rise of homosexuality more than any other single factor this side of all those Civil Rights acts since women so often have a fag hag tendency
but what really pushed promiscuity was the pill and all that free love casual sex stuff which I myself took part in before the Freidans, Steinheims, Faludis, Wolfes and Dworkins of the world became media darlings....women's lib though marching in the streets in say 71-74 did not become entrenched till say the movie Nine to Five...81 or so