I'm against wholesale loan forgiveness and it highlights a problem I have with a lot of the policies on the left, it only addresses the "who's paying for it" not the cost.
I think the loan process needs to be massively changed. You should only be able to get loans for actual tuition/fees. The interest rate needs to be capped at no more than a 10-year T-note. No loans towards for-profit schools.
There should also be a real forgiveness program, so that if you meet certain parameters the loan is forgiven. If you are paying on an income adjusted rate, you shouldn't accumulate interest on the difference.
I have known many people that lived high on the hog in college and didn't work, while I drove an old ass car, worked, and ate cheap. They should have to take some responsibility for their decisions, but again the loan system should be fixed to make living off the loans harder.
But the real issue is with school costs. State school prices are way up, meanwhile every campus is in an arms race for who has the shiniest new buildings and newest res halls. Nearly every top paid state employee is a fucking college coach. And schools are driving up cost by limiting supply. States have also limited funding to universities significantly over the decades (as a percentage). Private schools that don't meet some sort of endowment to freshman class ratio should have their endowments taxed.
Part of the reason school costs are way up is because students have infinite access to loans. Cut back that gravy train and university will stop charging $800/mo for a dorm room and $30/hr for sports facility bonds.
IMHO, you have to fix the loan practices and cost side, then start thinking about how you can forgive debt on people to where it "should have been."