Once again, hogwash. You are making a non-sequitur argument as there is no developed country with similar population size to compare.
What population got to do with delivering universal healthcare? It is actually opposite of what you are trying to imply. Larger the population better universal healthcare can be provided as cost and services shared across larger number of people. If smaller country like Japan can provide more effective healthcare than US, then US should be able to do 3X better not 1/3rd.
Why hasn’t the EU demanded that member countries abolish the healthcare systems and create unified system? By your logic, everybody would win here, and the win is obvious. So what is holding it back?
What population got to do with delivering universal healthcare? It is actually opposite of what you are trying to imply. Larger the population better universal healthcare can be provided as cost and services shared across larger number of people. If smaller country like Japan can provide more effective healthcare than US, then US should be able to do 3X better not 1/3rd.