I like how you think it's the Sanders supporters who don't know anything about the real world.
Paying off a $30,000 loan in five years would involve monthly payments of $560. Our hypothetical college student is taking home $3300 a month after taxes. They could be spending as much as half of that in rent, as well as a significant chunk more in food, utilities, and other bills.
A ten year plan with $311 payments
might be possible, depending on your expenses, but a five year plan is laughable. Even if someone is living from paycheck to paycheck, that type of schedule is extreme, and saving literally none of your income is generally considered
financial irresponsibility.