Why GitHub is not your CV

> determine if a candidate cares enough to code on their own

Which he is arguing that you are not a bad developer for doing other things outside of work. The vast majority of people need to not code to regenerate.

I can use myself as anecdotal evidence: I'm the goto guy when it's particular difficult to solve a bug, when it's a new framework, or when the teams are unsure how to solve a problem. I love coding, I constantly get compliments for my code and solutions. I do rarely code outside of my work. I used to before I got a "real" job after my degree, but now I (almost) only code at work. I usually think about solutions and architectures outside of work though, and I write a lot of pseudo code on paper if I get an idea for an algorithm - but I do not make binaries or contribute to OOS or a public Github repository. I have a spouse, children, friends, and hobbies that simply doesn't get as much of my time as they deserve.

I would never pass the bar at a startup that's looking for the typical startup stereotype developer. I'm 100% certain that I make more business sense to hire than all of your average workoholic startup developer, but I would never be considered. I have seen so many developers with great personality and glowing Github repo fail so miserably because they have poor work ethics and are unable to do "the boring stuff" that needs to be done in a business.

I can make a sensible plan, estimates that aren't completely bonkers, and I can tell when we're no longer on track to meet the deadline the same week it starts to slip. If I make a promise I keep it, or let you know that I'm unable to. I can also work completely agile, and not some "agile-but" that is so prevalent in the industry. In short there is soooo much that you need to consider when hiring. Screening based on a Github account is excluding developers that would be just the guy/gal you're looking for.

I really don't think anyone is saying not to do OSS on your free time. That there is a greater lack of diversity in OSS than in software engineering as a profession suggests that whatever it is that keeps minorities out of software engineering might be amplified in the OSS community, but it is not proof of this.

As for being an argument against using GitHub for hiring decisions, I'd pose you a scenario...two recent college grads are looking for their first job. One had parents who could pay for college, so in between rounds of beer pong and slacking off from class, this student found time to write a handful of OSS libraries and posted them to GitHub. The other was raised by a single parent in poverty, and is now working two part time jobs to fund their education. Between work, this person studies hard, does well in class, but has no time left to work on any open source side projects.

Which of these two students will be the better asset for your startup? Which of these two students will reply to your job post that says "don't send us a resumé, just link us to your GitHub profile"? Statistically speaking, which of these two students is more likely to be a racial/ethnic minority?

The people ahead of the curve have to be more motivated, but if we get more people sharing, more eyes to find and fix bugs, more people from other walks of life that understand a bit more of the hacker mentality, more acceptance of sharing code as a normal part of life, then the world is a better place.

Yes, it's a shame that not everyone who plays the piano has the dedication and vision of Rachmaninov, or that everyone who paints is Picasso, but I think the world is a better place for amateurs and dilettantes. Sure, we'd perhaps have better art if it were restricted to those who must, but we have a better society because those who are moderately interested can.