Okay so here's the thing. Even with my typically-European limited view into the salaries of others at my work places, from what I've observed and from the statistics I have consulted the actual "pay scale disparities" between genders are tiny / non-existent if you compare the same jobs. There is a major difference in gender-split GDP (~15-25 % depending on the country), but that is mostly down to women and men having different distributions of jobs, and not down to women getting paid less for the same work. Whether, globally speaking, different job distributions are a major issue, is an open debate.

That it reeks of biological essentialism and is exclusionary by its nature.