I think the article gets the idea of "cultural fit" wrong though. The problem is that workplace culture is different from regional culture. A developer fresh off the plane from India might be a better cultural fit for me than someone from my own local social circles.
I imagine that having an interviewer determine cultural fit might be a problem unless that interviewer is working closely with the team the developer might be working with. Perhaps a better method might be to have the developer work with the team on a probationary period before being extended a full offer.
Cultural fit is probably also more important for a small organization rather than a large one. If you have a large number of development teams, then a new developer has a better chance of fitting in somewhere as opposed to a small organization where the entire structure is rubbing elbows together.