I'm not going to disagree with you re: beer buddies. Really the way I read this is not as a requirement that employees participate in after-work events or in mandatory work friendships, but more of a misguided heuristic for something simpler. The general question is whether the average interaction with you is pleasant or not. If your job requires interacting with others (as it often does in software teams) and you're generally unpleasant or difficult to interact with, then people might avoid interacting with you, and that's a hit on everyone's ability to do their job. On the flipside, someone who's easy to interact with can be a great resource to everyone and also learn from all the people they interact with.