It's no different than a guy in the NBA wondering out loud if the bias towards men might have a biological component, so that even if the systemic barriers are removed, we might expect far different than 50/50 female/male in the NBA. But no one thinks that - it's obviously silly because physical attributes are so obvious.

So we'll use Wikipedia as a perfect summary of all the research on this topic: https://en.wikipedia.org/wiki/Sex_differences_in_intelligenc...

"significantly higher variance in male scores, resulting in more than twice as many men as women scoring in the top 2%."

But certainly that study and all the others are just wrong, or they're measuring the wrong thing and it's not applicable to software.

I dunno, perhaps the ratio should be 45/55 once the systemic bias is removed. Or maybe it's 55/45 - maybe the systemic bias is beyond terrible and males are worse at software and we've got it all backwards. Doesn't seem like there's anything supporting 50/50 other than some weird notion that everyone's not physically equal at all, but somehow our brains are.