I think Github is itself mostly white guys. Also, most of the people being labeled SJWs on the relevant Github issue are white guys. So this isn't about whether you are a white guy or being defensive about being a white guy.
Why should race or sex even be a part of the equation of "Hire or Not?"
But don't worry. Github hired a bunch of women for their women-only area, Passion Projects. They only hire women, so it's a "Safe Space".
... and it appeases the feminists so that we don't have to hold to high standards of programming. They do the frilly 'social media' productions because you know "women are good at social".
Edit: And that's the problem with specialized woman-only hiring procedures. They look good from a PR aspect as well as an appeasement angle, but the message they deliver is "Women aren't as good as men, so we have 'special' programs for them."