I think you put too much faith in the ACA. It’s still insurance — with all the copays, hoops, and “not covereds” that comes with.
People who have huge medical debts lose their homes. People with addiction problems can’t take care of themselves and keep a home. People who have chronic health problems can’t hold down a job without ongoing treatment. Being able to walk into a clinic and get the help you need means that your income can be spent on other things (like food, clothing, and shelter).