1) He's making a generalised statement about the legitimacy of information classification which, I think most of us would agree, is necessary in some cases. He can believe however much he wants that it's a bad model but he's gonna be annoyed time after time since whistleblowers and the tech that can help keep their identity secret will always exist.
2) The real names policy on G+ is a load of shit... none of my accounts bar Amazon or Paypal have my real name.
3) Any company you use for email is going to know your real name, unless you're magnificently careful to exist solely as an alias which is hard/impossible if you want to buy things on the internet. They didn't have to change any policy to know your name.
4) I feel like this is the first time the post link to a source is for an illegal .epub version? Seems unfair to the author, though I do find it amusing.