For me the number has been closer to 80% (my interestes/categories have been, foss, software dev, high tech specialization / academic work).

This is not surprising because I remember looking at the stats, females accounted for 2% of open source developers. And it was 7% female software devs (non-oss included, work etc). These stats are a few years old. I wonder if we can still find stats about cis-women in FOSS. Have the stats increased? Or is it too much of political hot potato to gather such stats?

How many males are naturally fascinated with computers? I know I was. Therefore it makes sense that if we see a female name, it is not just possible but likely that, that person is trans. Nowadays when I see a female name, I don't make the same happy assumptions I used to. That said, I welcome anybody interested in computers with open arms.