Mostly I see that Hackers tend to be generally unsatisfied with the state of things around them, and will compulsively seek to improve or atleast _know_ the system. The lonely part arises from these traits I think which puts them at a somewhat alienated position in society, because of their intolerance towards incompetence or the irrationality of the world around them, which I believe puts them at a risk of withdrawal from society towards the rational and logical world of computers.
As for moderation, I don't think hackers are quite known for it. Hackers are by definition among the extremes of the computing society, so moderation would be viewed more as a stepping down. No wonder most hackers tend to be INTPs.