Interviewing is a different situation though, because you start having essentially no relationship with the interviewee, and you haven't seen their work. OSS projects don't just add everyone that asks as a co-maintainer. Usually it's someone that has contributed to the project for a while already, and through that has shown they understand the code, are capable of improving it, and can make sensible decisions about the road to take.
Yea, I get that, from what I see in the details of this case the contributor was very competent. What I'm questioning here is whether in OSS projects there is enough face-to-face communication, probing about values, etc.
