I think his point is the fact that the test is evaluated in a subjective manner. It makes it no more valid than an evaluation at some New Age seminar. The system which the educrats produced is broken, and their tests are essentially broken.
Essays are always evaluated subjectively. There's nothing New Agey about that. Essay-writing is not mathematics and unfortunately can not be graded with multiple choice answers or exact "right anwers". Unless you think there should never be essay questions on tests the subjectiveness is just something that can't be avoided.