If you aren’t capable of understanding debt you should t go to college.
There is nothing wrong (at least compared to student debt) with people having $400k+ mortgage or car payments, the issue arise when that money is used to earn a degree that has no monetary value.
Perhaps your proposal is that, before someone takes out a loan, they take and pass a course that covers interest rates, credit scores, expected income, alternatives, and other such issues? Is that what you meant?
Especially considering people make much more money if they have a college degree. Even if you don't understand debt, you understand that. The problem isn't incapability of understanding debt - it's never actually being taught it.