There were some obvious benefits for women from the huge change in social attitudes towards sex that came in in the 1960s and 70s, notably less stigma for women having sex before marriage or cohabiting and/or having a child outside marriage.
I can't help feeling though that it was out of the frying pan into the fire for many women.
Pressured into having sex or be labelled frigid.
Told marriage is just a piece of paper, so not insisting on having their financial position protected before sidelining their career after having children, while he forges ahead with his.
Pressured into accepting their male partners watching porn, even when it makes them uncomfortable.
Pressured into acquiescing to sex acts their partners learned about from porn, even when they're obviously humiliating or extremely risky and will hardly ever be enjoyable for a woman.
Women's Lib didn't go far enough.