He did try to do wide scale student loan reliefs but the supreme court kept blocking his attempts. The rules they are talking about were his second attempt at writing around the court rulings for broader relief. He kept at it with different approaches to work around that ended up smaller and more narrow because of stupid court rulings. His plans blocked by courts would also would have done stuff like capping interest payments for future loans and so much more.
Republicans kept challenging his rules at every step because they thought that people would blame him for their lawsuits. Sadly it seemed to have worked and created perceptions exactly like the comment I'm responding to
I don't disagree that Biden certain was problematic when in congress on student loans, but it's worth noting that the action he had planned to do was well beyond just one-time student loan forgiveness
He's lowered the bar for discharging student loans via bankruptcy via executive action. It shouldn't have been nearly impossible before, but it's now moved into the realm of at least sometimes possible now
[...]
https://www.cnbc.com/2024/03/12/biden-makes-it-easier-to-forgive-student-debt-in-bankruptcy.html
He also tried to cap interest rates, and reduce the monthly payment requirements, increase federal student aid, etc.
https://www.whitehouse.gov/briefing-room/statements-releases/2022/08/24/fact-sheet-president-biden-announces-student-loan-relief-for-borrowers-who-need-it-most/