I also don’t agree that low income kids will necessarily have less in student loans.
Even if they get full Pell and state grant and commute to school, around here they still have to take out a loan and also work part time.
Their parents can’t contribute anything, and the grants don’t pay for all the costs. So they take out loans.
Now if their stats qualify them for a full ride somewhere, more power to them, the same can be achieved by a kid from a more affluent family, if the merit is not dependent on need.