"Imagine you have been invited to join one of two groups. Team A is composed of people who are all exceptionally smart and successful.... This team is efficient. There is no idle chitchat or long debates... Team B is different. It’s evenly divided between successful executives and middle managers with few professional accomplishments... At the end of the meeting, the meeting doesn’t actually end: Everyone sits around to gossip and talk about their lives. Which group would you rather join?"

I knew I'd want to join Team A: smart, efficient people who get stuff done without idle chit-chat.

If you believe the article, Team B will be less effective because they are too individualistic, and walk over other people. They didn't actually say "self-centered", but it was implied.

I don't see how you can't be both efficient, smart, and empathetic; I don't see why there has to a choice. I've worked with my fair share of a-holes, and it's no fun. But it's also not fun working with schmoes who spend more time gossiping over the watercooler than getting stuff done.