This is a valid concern. Of course, the problem is Congress is dysfunctional so a strategic fix (universal public higher ed) being enacted is potentially many years in the future (if at all). This is immediate, tactical relief for people who are suffering financially. In the same way that someone bleeding to death on the pavement doesn’t care about dysfunctional healthcare policy at that moment; they want to get stabilized.
(I hit the highest marginal income brackets and support this policy; good policy is the interaction of compassion and pragmatism at scale)