I will ignore your rather puerile jibes and will merely suggest that you do some reading yourself - to bring yourself up to date.
Going back to the original thread, if someone turns up for a Rating revalidation, you are required by the CAA CFE to check that the licence, Medical and rating are all valid. Period. Ask him yourself if you need further convincing - I raised the point at a 'senior instructor's seminar' (their description, not mine!) and he agreed most emphatically that you are to do so.