b) your argument is that 50% is currently not possible
most companies are <20% in tech positions and <20-30% for management
a few years ago even <10% [2]
[1] https://pxlnv.com/blog/diversity-of-tech-companies-by-the-nu... [2] https://unreasonable.is/silicon-valley-more-female-engineers...
I don't think the percentages in management really matter because you tend to get promoted from lower rungs. Management % probably reflects the programmer hires 5-10 years ago.
We really need to look at the percentage of female applicants. In the ~1000 applications I've seen directly from indeed etc, less than 20% we're female. I didn't count, but it seemed closer to 10%. It's so bad that for some job listings I remember not receiving a single female application for 20+ males.
So choices in life means much more than we want to admit.
Of course women are being affected early on just as men but then the discussion should be about that rather than putting the guilt on companies who are just trying to make a business.