Our methods of teaching focus on the memorization of facts, rather than the cultivation of disciplines - such as, say, logic and critical thinking - that allow them to think for themselves.
Under the commonly understood meanings of these words, this statement is, to put not too fine a point on it, preposterous.
Current methods of teaching focus on the memorization of facts? Huh?
Not just the learning of facts, mind you, but the memorization of facts. Quick, somebody call Don Hirsch and tell him he can retire.
Then we get the highly misleading implication that critical thinking is somehow a discipline to be cultivated in and of itself, as opposed to being a domain specific skill.
If you want to learn about critical thinking, how it should be taught, and why Stephen is wrong, I advise you read Dan Willingham's article, Critical Thinking: Why Is It So Hard to Teach?.
If you want to see Stephen make a fool of himself defending his statement and lose his cool to boot, see this comment thread.