I have a ratio of around 1:10 female:male from my tech staff. I have not seen this "powerful women speak less consciously because of negative reactions" from women any more or less than I see in men. I'm not saying it doesn't exist, I am saying it's natural for variation to exist and it's not exclusive to women.
But whatever, keep pushing that narrative. It hasn't worked in 12 months, but maybe today eh.