I say 'should' quite deliberately because all of the legal requirements for revalidation have been met and that is what the instructor is signing to say - he has checked that the necessary number of hours have been flown and that the 'applicant' has had a 1 hr flight with an instructor. Full-stop.
It is not up to the instructor (or the CAA) to 'gold plate' by adding their own personal requirements.
Debate.