He thinks it's socially awkward to unfriend some of his several thousand friends? Why did he friend them in the first place? How can he say with a straight face (I'm assuming) that apps like Path and Instagram have shown him that rebuilding his social graph every few years is a "must"? Because of fights with friends? Do adults really fight with their friends and then unfriend them on Facebook? How about just hugging it out afterwards?
These are contributions I'd expect from a mainstream celebrity, but I don't feel like this represents the hacker culture (call it whatever you want) very well.
Sorry for the off-topic. I do like the dynamic, perhaps even implicit, graph idea though.