Go back and read what I wrote. This is not what I said.
You seem to be focusing on FAFSA. Let’s say that you did not remarry, have no income and your child has a FAFSA EFC of $0. The only difference in federal aid from what you say you are experiencing now is that your child would receive a full Pell grant ($6,495 for 2021-2022) and some of the federal direct loans would be subsidized. Again, looking just at federal aid, your children would not “all be getting probably close to a free ride for college” as you opine above.