So even average-looking women who decide to break away from these restrictions usually have a relatively easy way to do so.

What does "relatively easy" mean here? Doing well in a sexually open culture may be especially hard for males with some sort of religious baggage and no real education in the matter (you have argued this quite persuasively elsewhere, and I broadly agree), but I doubt that it's anything easy for females in the same condition. Even the most un-inhibited folks have preferences and standards for their sex lives that don't boil down to just "having sex, and as much of it as possible, regardless of the circumstances and risks involved".