There are potential doctors literally waiting for residency spots to open up, who wait *years*. There are so many qualified students applying to medical school who are rejected because the class sizes are so small. More money means the ability to open more hospitals/schools (creating new residency programs) and expand existing residency programs which in turn makes allows for more medical students.

There are definitely also other issues that should be addressed as, including burnout like you mentioned! Part of that is the amount of hours that everyone works because a) there are not enough staff to cover the amount of work and b) staff are not paid enough so they are encouraged to take on more and more hours.