Your arguments about diet and rationing have some weight. however I've had health professionals explain to me that one of the major advantages of the state funded scheme, is that if the poor are abandoned to be ill then there will eb a knock on stress effect on other levels of the economy. there will be a bigger pool of diseased individuals to infect the richer with the better health cover, If moor of the poor are off work sick, then the   management is stressed by having to do the same work with less staff. In the end it is a losing strategy for a society.

Any idiot can face a crisis - it's day to day living that wears you out.