Healthcare in America is excellent, especially in the bigger cities, where competition, consolidation and specialized medicine deliver as good of medical care as offered on the planet.
The issue is costs, driven largely by the insurance companies in the middle.
Although the ACA's moral compass was righteous, the insurance companies and PHARMA remained King, and the math is not sustainable (particularly w/ no help from Trump administration to make the exchanges user friendly).
The GOP seeks to cut insurance premiums by cutting what an insurance policy has to cover. Cutting Medicaid and the mandates (employer and persons) presents as a big cost saver, but it doesn't cut the number of patients who will need medical care. Hospitals will treat the sick and those uncovered costs will get redistributed to us, via insurance premiums.
Single payer for the masses + cutting costs in ways Baron proposes.