It's not just math, you can put any traditionally male-dominated field in and it'll still work i.e. Study: Women Who Can Code Still Don't Get Hired; Study: Women Who Write Games Still Don't Get Hired etc etc
In New York, there's a relatively large indie game scene. They hire game developers, but usually for casual games i.e. iOS app games (think flappy bird) or indie games
I call bs on this. Companies are desperate to hire programmers.
Depends on what type I think. I'm a front-end primarily, and it's not that bad (as a woman) but my friends who are back-end developers find it harder to get accepted at workplace. This is all anecdotal of course