My current interpretation is, "geeks, mops and sociopaths" is the story of a single person's path through a subculture and not the story of a society. That's why it resonates, but also why it breaks down if you stay in the subculture for more than one generation.
And some subcultures do only last for one generation! But it's still silly to blame entropy for your extinction when what you should've been doing is reproduce, which is to say attract and mentor new members. In the longer-lived cultures, these can even be your own children.