Important to remember, in many cases it was a goal, not a side effect. When someone lived out their life and they're kinda miserable and unfulfilled, they might justifiably hate our world, in a sense. There's really only one way to take revenge on it, and that's to perpetuate and worsen the shittiness so that nobody can hope to escape it.
The worst part is that the student debt they paid off was a small portion of the debt that people cannot afford to pay off now because the same people defunded universities.
When I was a young kid a summer job at minimum wage could pay for a year of state college. By the time I attended a summer job paid for a semester. Now a summer job at the minimum wage will barely pay for books, since the minimum wage has stagnated and tuition goes up year after year.
I would be surprised if the people most aggressively against student loan forgiveness had any personal difficulty with student loans themselves at all. The politicians beating the drum were likely wealthy enough for tuition to be an afterthought, and their constituents do not value education enough to have needed the loans in the first place.
If you're in the second camp you're probably also bitter that these educated liberal elite, that think their so fancy and embarrass you with their big city talk, want now to get their education, which they lord over you, FOR FREE! You're probably angry that these young people with their hip culture you don't understand or have time for, because you're waking up predawn to drive 45 minutes to your manual labor job which is wrecking your body, "don't have to work like you do." In short, you're probably not very big picture oriented, your self esteem is probably pretty fragile, and you're probably not the strongest abstract thinker. You're likely angry to the point of antisocial, and relish any opportunity to leverage your will.