The writer describes the student loan process as being "legal but not moral". Considering when he got his student loan, and how he got it, I don't understand his perception of the loan as being "not moral". I took out my first student loan about 40 years after he did, in 1984. That was a different time. College was not nearly as expensive, and paying back loans was not as difficult. All of my student loans together added up to about 40% of the annual income from my first job. These days, comparable loans would probably come to about 120% of the annual income of a first job. The first obligation is something that could be satisfied in a few years. The latter, modern obligation might well never be satisfied. One might argue that the modern system, with towering loans to complete useless degree programs is immoral, but that was not the situation 40 years ago, or even 30 years ago.
What is immoral is not paying back what you borrowed. A couple of his suggestions for handling the situation are totally outrageous, most notably, that one should marry someone who has a good credit rating. Really? His life philosophy is to burden someone else with the consequences of his bad decisions?