PSLF is not under consideration if they are trying to work hard and pay off the loan quickly?
The discussions I read were quite recent (6-12 months ago) where they were listing specific jobs and working 80-100 hours a week which translates to over 700k even at 180/hr. They were looking at paying off 300k or more in 2 years.
Granted this was all hypothetical discussion amongst ER residents. They are checking with each other about the feasibility and burn out.