That is a really fine line they are drawing there. You have access to the same information on both services and you acquire it in essentially the same way i.e. by the other party volunteering it. Facebook is effectively asserting that their users rely on the fine details of how the service works to maintain their privacy, even though Facebook has never had much regard for that principle themselves.

He is right about the "when it's convenient" thing though. If you want to adhere to a moral standard then great, do it, consistently. What other parties do is irrelevant.

And corporations morally crusading against each other is a complete joke. Corporations will slit your throat for a nickel. My stomach is not looking forward to the "who's less evil" war Google has started.