Yep, the hidden fact of student loans is that the ones struggling to pay it off most often aren't the ones with $100k+ in student loans.
Those usually graduated from a mid to top tier school with a marketable degree, and won't have many issues paying the loans.
The ones struggling usually have lower amounts, and got leo-marketability degrees from for-profit or low-tier schools.
http://fortune.com/2015/12/01/student-loan-delinquent/
https://equitablegrowth.org/an-introduction-to-the-geography...
But this doesn't mean that there isn't a problem. There is one, it is massive, and it is bad for society.