My point is that there seems to be a culture of forthrightness among FOSS developers and less concern for the social niceties. Of course, there are people who have a greater set of social skills than others. Those also tend to be the older developers, such as you and Randal and Larry. People who have had a reason to actually learn those social skills because they don't have the luxury of only interacting with the FOSS community.

Basically, I've noticed that people with a propensity for those skills that FOSS developers tend to have don't have a corresponding tendency for social skills. Both can be learned, but I don't think the intersection between the groups who natively learn one or the other is a large one. IME, of course.