Shame has a social function, and a useful one. But we have a tendency at this point in time to say that any social boundaries or pressures around sexual or physical things are somehow shaming, in a way that strongly implies prudisness and also a desire to opress.
Part of the problem is this assumption built into much of our culture that freedom comes through individualistic choice, and the possibility for increasing that is infinite, and there is no trade off.
A simplistic and slightly banal example being something like pubic waxing for women. Isn't this simply an expression of individual choice, sel-stheniticity, and sexual fredom? Well no, it's not, because despite what people might like to think sexual norms are learned collectively and many of our expectations and even preferences are mediated culturally. So if you are a young man who has come to expect certain things in terms of grooming through pop culture and your own sexual experiences, you and many other you men may well be put off sexually when you encounter something different. And so of course this affects the young women who want to be active in the sexual marketplace.
Under the sexual revlution, sex becomes something non-serious, something casual, and without shame attached. What's the effect of that thinking going to be on a culture-wide level? And there will be an effect, it's deeply naive to think otherwise.
Feminism has been inconsistent on this, there have certainly been some feminists who see this problem clearly. THey've been somewhat undone, though, by the fact that the progressive left has tended to be somewhat uncritical in accepting the general proposition that increased freedom (whatever that means but especiallly phycical bodily freedom) is the proper goal of society and has no serious trade offs or limits. This is part of what has got it into trouble in terms of the idea that the physicality of the body is itself in an unacceptable limitation on freedom. Or to put it another way, the integration of who we are as women, or sexed beings, imlies an acceptence on not only limitation, but a realization that freedom is also positivly related to recognition of limit and form.