I suspect it's more likely that there's just a lot of latent talent in women due to being undervalued. A female-only group is a coarse way to create an org that unlocks that value, but there are plenty of ways to do it in a mixed environment.
One that I'd like to see more of is a zero-tolerance policy for anyone who marginalizes women in the workplace (e.g. people who file tone complaints only against women, people who talk over women in meetings, supervisors who make gender-based promotions, women getting paid less due to "market rates" etc.) I see a lot of those things still happening in tech companies, which leads to women underperforming in mixed groups.
One that I'd like to see more of is a zero-tolerance policy for anyone who marginalizes women in the workplace (e.g. people who file tone complaints only against women, people who talk over women in meetings, supervisors who make gender-based promotions, women getting paid less due to "market rates" etc.) I see a lot of those things still happening in tech companies, which leads to women underperforming in mixed groups.