I don't think that's what the GP says. They mean that people undergoing trauma from personal interactions look for a way to relieve it, of course. Trauma is about survival (whether or not the person is aware or really in danger); there is a strong drive to resolve it and mastery is a very common way. In this case, by mastering something non-social they get strength and stability.
Wow, I’ve never considered this but it makes sense, to a degree. Children who are “properly” socialized, or socially motivated, would have much less time available to pursue technical skill acquisition. I could imagine things snowball from there as they choose paths of least resistance in life, e.g. opting for engineering rather than sales as a career.