As a society, we seem to have gotten into the mindset that college is the only option after high school. That's part of the reason why so many people are saddled with college debt. College is not the only option, nor is it often the best option. There are very good trade schools too. Society needs plumbers, carpenters, electricians, mechanics, etc just as much (if not more) than those with degrees in business, education, engineering, etc.
Learning disabilities come in a range from slight to severe, so only the individual, their family, and support group would know their limit's and their potential. There is no "one-size-fits-all" solution to those must live with such challenges. Their choice of a vocation is one that must be chosen based upon individual choices.
As for those who choose to go to college, society should not be held responsible for any individual's poor choices. Those choices include selections of a school and a course of study. But those who do go to college are legal adults. If they agree to the terms of a loan, then that's a responsibility they've chosen to assume.