I wonder if it's more inherent than just culture. Women are more, for lack of a better word, desirable to men than vice versa. A man can value a woman who does nothing but exist. But a man needs something extra to provide some value to the partnership. (The previous sentences are, obviously, meant as an statistical tendency, not a universal truth.) Thus, while the negative constrains on women were mostly baseless in a modern society (with violence and manual labor being increasingly devalued), the negative expectations on men are not as baseless. Of course, in so far as monogamy and the roughly 50% sex ratio mandate some kind of https://en.wikipedia.org/wiki/Baumol%27s_cost_disease, these cultural expectations will lower over time, but I fear that the tradeoffs of the male sex will continue to become more and more out of touch with what is needed to prosper.
