Overall I think this group is filling a need, and with a favorable disposition I'm looking at this as a positive. Paying some attention from afar, as a man, the two things I would like to see out of these efforts in the long run is to not be thought of as working a misogynistic career field, and that this is a worthwhile direction to encourage my daughter to explore as she grows.
I'll offer a warning that might be insightful for those that might not see the world this way. In the past, at least in the US, there has been a need for various "workplace advocacy" groups to help various peoples for one reason or another. While those needs in cases have been met with legitimate efforts, there have been other "shake down" con rackets that have unfortunately left a terrible taste in the minds of so many. While these are the exception not the rule, the damaging set backs can be immeasurably large. So for what it's worth, do what you can to maintain legit, honest, organization that actually helps the idea of women in open source and computing. To put it another way, when the time comes, call the police instead of celebratory lawyers and politicians.
Another neutral observation is that it sounds like some of the gender disparity in F/OSS is a function of academia. Scaled for the percent of women in computing to begin with, far more women appear to come from backgrounds in academia.