That seems like a cartoonish summary, or maybe they're just a cartoonish person. But I think there's some truth in there.
It's undeniable that open source is mainly white dudes. There are plenty of women who will tell you that they don't feel welcome in open source, and so don't participate or have stopped participating. So if you use open source participation as a hiring filter, it will have a bias.
Personal projects are a sign of having time and money. That is also correlated with being a single white guy. Parents, and particularly single parents mostly just laugh when you talk about free time. Making humans from scratch is their personal project.
That's not to say that these aren't good things to look for. I look for them myself. But if you use them as a filter (as opposed to one of many positive signals), then you definitely are biasing your hiring to middle- and upper-class white males.
It's undeniable that open source is mainly white dudes. There are plenty of women who will tell you that they don't feel welcome in open source, and so don't participate or have stopped participating. So if you use open source participation as a hiring filter, it will have a bias.
Personal projects are a sign of having time and money. That is also correlated with being a single white guy. Parents, and particularly single parents mostly just laugh when you talk about free time. Making humans from scratch is their personal project.
That's not to say that these aren't good things to look for. I look for them myself. But if you use them as a filter (as opposed to one of many positive signals), then you definitely are biasing your hiring to middle- and upper-class white males.