I think part of the problem here is that medicinesux has several opinions / issues / concerns that have gotten mixed up on this thread.
The first is that medicine is a miserable career due to multiple issues. I am not going to refute that here. I happen to disagree, but I can certainly understand why he/she feels that way.
The second is the concern over another financial crisis regarding educational loans. This is a huge problem, as demonstrated by the links he/she has provided, and has basically the same roots as the housing crisis:
1. Starting in the past, the number of people going to college increased dramatically. New colleges opened to drive this engine. It became "common knowledge" that if you went to college that you could get a better job. Hence, if everyone goes to college, everyone gets a better job. This is crazy.
2. Colleges charge crazy tuition, but they get paid by banks / the feds and are happy.
3. Banks have educational loans that seem rock solid -- they are non dischargeable in bankruptcy.
4. Students get squeezed in the middle. They simply sign their prom notes and it seems all like funny money. It's hard to understand how much it will really all cost. Chances are, they are shown some statement like: $100K @ 7% over 10 years = $1200 per month. They don't really realize what that means, and assume that once they have a college diploma they will of course get some fantastic job that will make tons of money.
5. Students graduate, find they can't get jobs or that they don't pay well, have these huge loans, and wonder what went wrong. They blame the people who wrote the loans for being misleading. The people who wrote the loans blame the students, for getting themselves in too much debt.
6. As far as I know, educational loans have not been securitized. If so, then we have a mirror of the housing market issues.
Of note, this really is not much of a problem for medical students, or really is a different problem. The vast majority of medical students (at least those trained in the US) will graduate and go on to practice. Even those in the lowest paying fields can afford debt of $100K, and even $300K is managable -- except that you can't afford $300K debt payments on your loans and a mortgage / "comfortable lifestyle". So, the problem is not affording the loan, it's affording the loan and the rest of the lifestyle that most physicians expect.
The major problem is numeracy. Most people, even smart ones (like physicians), often have trouble understanding what these debt payments mean in the future.
So, there is going to be some sort of educational loan crisis, but not for most medical school loans. And this is not a problem with medicine specifically (although I agree that the high cost of medical school is a problem, but it's inherently different than the educational loan problem).