We need to find a way to figure out which of those differences are important, then. YC seems to be trying via this Ask a Female Engineer series, but if we ask those female engineers which issues are most important to them in regards to what would drive them away and the answers they give aren't satisfactory, then what conclusions can be drawn?

If the issues listed are largely the same issues faced by men, and if the issues have an equivalent impact on male engineer retention, then the answers are incomplete or we're asking the wrong women. Maybe we should ask female former engineers why they left the industry?