Not even taking men into account seems to passively push the rather sexist mantra that men should just "suck it up" and not actually be taken serious in cases or sexual coercion and quid-pro-quo situations.
I'm not trying to argue that woman are not disproportional represented in these case, however why not just include everyone? You state Callisto is a "non-profit dedicated to building tech to combat sexual assault and harassment." if that is the case and it's not just for assault and harassment against woman, then why self-limit the scope of your survey?
And if the answer is "we would have just found no-one had any issues anyway" then I restate the question, why not just send it out to everyone and show this disproportion with data instead of just making it an assumption?