[cmcewen]

This criticism does seem to be more harsh than is necessary, but I don't see what the problem is in seeking the advice from those with more experience teaching. Khan has created something amazing, but that doesn't mean he is infallible nor that his videos should stay as they are today.

If you read the second to last paragraph, they don't suggest that Khan Academy shuts down, or that he stops teaching. They literally just say, "Hey, it'd be nice if he asked some really great teachers to look over his examples before he uses them to make sure he doesn't confuse people." I'm not an expert, but sounds like it couldn't hurt.