Maybe it's because it'd mean that pretty much every medical doctor would themselves be technically (or not-so-technically) considered mentally-ill?
(Gosh, imagine a world where all the doctors got treatment for their floating guilt, and then suddenly woke up to their severe overwork, and so did a 180 on their previous push to the medical-bar to lower acceptance to increase wages, instead pushing to increase acceptance and lower wages in an attempt to increase the number of doctors a hospital can employ on a given budget, and therefore decrease hours worked per doctor?)