You're conflating current disbursements with the outstanding debt, which is what the original assertion was on. Either way it is looked at though, their assertion is wrong.
> You're conflating current disbursements with the outstanding debt
No, I was just googling for stats, and that's what I was able to find. Here's something else though: "46% of federal student loan debt belonged to graduate student borrowers in 2017." https://educationdata.org/average-graduate-student-loan-debt