I was thinking the same, every single trans or genderqueer person I know is in tech; but then I found it difficult to think of people I knew of any description who weren't in some way in tech. I guess it's a matter of perspective. Still, I would imagine it is easier to experiment with presenting, gender identity, etc when you are anonymous behind a LiveJournal (for some reason all the trans people I know have one). Heck, I was accidentally presenting as male for 2+ years on usenet because nobody took the time to wonder what gender I was, instead just assuming.