Instructors must not teach flying alone but also airmanship. It is like flying in alps. Many different things to watch out for there. You cannot see the dangers always. You must be tought to anticipate the problem before it comes to you.
Airmanship can be -ingested? But the instructor has to awaken a chain of lateral thought process in the student. It is then the responsibility of the examining instructor-CAA? to ensure that this process has been done, possible he has to invent scenarios and ask questions, on taxi out for test for example, to see if the training process has lit the fire of airmanship thinking. Airmanship in the past is a subject in its own right. Is it still? You could pass a flight test for skill but fail it because of lack of airmanship - so should it be. But it takes a strong CAA to enforce a regime where one can be failed for attitude!