I think he's correct in some of his predictions. I don't care to interact virtually with acquaintances and would rather make new real-world friends. I started building SociaLocale for this exact reason. It's an interest and location based social tool. It's in super-duper alpha at the moment, but can be found at http://socialocale.appspot.com . Will eventually do a Show HN once I'm confident it'll handle the load :)
I think he makes very little sense to be honest. I have a Google+ account which I never use or post anything to because the majority of my friends are on Facebook. All the people I have added on Facebook I have met in real life and are real world friends either present or past (people I used to go to school with) and certainly all people I would like to meet up for a beer with again. I have maybe 150 people on my fri…
I think your response to c) is somewhat over simplified, facebook is definitely not what I want but i still use it until what i actually want comes along and people start using that instead.