I think there are two similar but different issues you are confusing here. My reading of Jason's comments are that he is suggesting that if you are claiming to George Clooney the movie star or Paris Hilton the... whathever it is she does... then there should be a validation process to prove that you are.

That is different than enforcing that if you want to use Google+ you must verify who you are, and no aliases allowed. Paris Hilton can create a fake account under the name Jane Doe if she likes. And David Hasslehoff the shoe salesman from New Jersey can create an account. It's just at the moment they claim to be "the" Paris Hilton or David Hasslehoff that verification would kick in.