If you disagree that a better educated society is a better off society then yes we disagree on that first point. However, for something to be a “moral” argument it doesn’t mean every single person agrees that it’s “true.”
Example: the majority if people view war an amoral, yet war happens and people commit amoral acts. If you disagree that education is a foundational good for society that’s fine.
The Federal Government literally does own the debt, they don’t simply guarantee it. You may be thinking that companies service/collect on loans, but those companies do not own it. Ironically, the Dept of Education has tried selling these student loan balances and no companies want to buy them.
Your understanding of a sovereign currency is off. The central bank is not “limited” by what money they can disperse to other programs. They are not like a household or state government where they have a specific “budget.”
The central bank controls the money supply (they create the budget), and always have the power to increase the supply (spend more elsewhere) or decrease it (spend less overall). They do one of these things every single year.
Also- I made sure to specify in the article I was only talking about public loans held by the govt and not about private bank loans because the process for canceling those two things are very different.
If you want an explainer with lots of links about the federal debt/govt spending I’ll point you here. I also used to follow this line of thinking until I took a deep-ish dive into federal monetary policy.
https://medium.com/politically-speaking/you-shouldnt-be-scared-of-the-federal-deficit-5ae08370cc0a