I agree with Spinex
Point number 4 is not a good one, Cactus.
CASA is already way too risk averse on the question of medical certificates.
Sorting out why Mr Hempel was issued a medical certificate, despite a medical history that would result in a refusal of a certificate for anyone else, is the appropriate response.
Denying lots of people medical certificates on the basis of remote risks is not the appropriate response.