Single - sure, men - sure most programmers are men, but why would they favour white people? Do they work harder? I’m pretty sure white people are underrepresented in Silicon Valley, while Asians are heavily overrepresented.
Could be I'm wrong. I look at this across all locations (including where I am, in the middle of the country) and the majority of people I worked with that were putting in crazy hours were single white men. Once people settle down they have a way of self selecting out of the jobs with insane hours.