Actually, the answer is both sex and workplace dependent. (Yes, there are workplaces where there's no sex discrimination and some where the sex discrimination is against men.)
However, the furor over sex discrimination isn't that "subtle".
This line of thought reminds me of the furor over the lack of women on the boards of fortune 500 companies. I find it hard to get excited over whether folks who are otherwise extremely favored (namely the women who would be considered) run into a glass ceiling. The vast majority of both men and women run into glass ceilings that are a lot lower.
It's sort of like being mad because the oldest son gets to be king even if there's an even older daughter. Discrimination, sure, but it's not a problem worth significant effort.
And feminists still claim discrimination in the workplace.