Many members of this forum are females but they just don't keep specifying they are males or females. There are females who invest in stock market and forex as well but if we compare the number, it's more a male dominated market rather than a female oriented market. Even IT professionals have more females as it was in my college so it can't be determined.
I think Satoshi is not just IT professional. He, is an innovator and a visionary, something like Linus Torvalds, Bill Gates, Steve Jobs, ect. And most of them are male.
However, Satoshi could be a team of people, at this case a gender is irrelevant.