I'm trying to figure out where you're getting this "economy wrecking" argument.
Total Student Loan debt is $1.5 Trillion. The U.S. GDP is around $20 Trillion per year. Let's assume that (a) 50% of the student debt is held by "high risk" individuals and (b) that they default at a rate of 33% per year. That equates to only $250 Billion dollars of default per year (1.25% of the annual GDP).
You should have taken an Economics course or two while attending this alleged University with a prestigious alumni base.