I'm going to go against the grain here because the group of ppl in question - those who would legitimately require menstrual leave - are more accurately described as "people who menstruate" (or maybe "women who menstruate") than "women" or "all women" which is used in the 2016 piece.
All women wouldn't require menstrual leave, as we don't all have periods - pregnant women, post-menopausal, those on medication that stops menstruation.
I don't have a problem with using language that avoids referring to trans men as women. And all trans men won't have periods either. So "people who menstruate" does accurately talk about the demographic in question where "women" doesn't. The two are not directly equivalent.
Obviously to use the term to just refer to all women in a context that has nothing to do with periods is ridiculous, and I'd expect the equivalent usage when talking about male-specific issues.
I know I'm in the minority here but as no-one seems to even know what a woman is, it dodges that "confusion".