I don't know the author, but my initial take is: loner, work-a-holic, egotist. None of that is meant as an insult. To "socialize" in a local sense doesn't need to mean you meet "with over 400 people, one-on-one, went to every conference and get-together, and said yes to every request". It means making friends: the kind that build decks together (with free beer); go bowling, watch the big game together at the pub instead of at home, go for a hike with the kids, meet up at the coffee shop every Thursday morning, and simply help and grow together. Its not work. Its natural. Fun. Community. The author is missing out.