Wow, way to demonize anyone who's dealt with addiction or mental health problems. And as was said here and by many students and professors in my school at least, people only applying to competitive specialties and/or people who only rank a few places. And saying that these end up just fine could use some clarification.
That said, I agree that this quasi-PA approach isn't the way to go. If these people want to practice, they are best off trying to find a research fellowship and a prelim/transitional year if they can. If not, next year apply to every program possible, particularly ones in less desirable places, and ones that have tended to go unfilled, and apply to prelim/transitional years, after which you can still practice as a GP, and to primary care specialties at less competitive programs where you have a better shot. It would seem the best option then would be to try to get more prelim/TY spots opened up (dunno how common it is, but I've heard some rough stories about people matching solid PGY-2 residencies but not getting a prelim spot, so this would help with that problem as well).
o so is very, very low when there are already established and regulated "midlevels" (btw we universally abhor this term!)