@maporsche,
I agree. In addition Medicare for all - a government run monopoly - would in effect put the government in charge of the health for everyone using it. Doctors and hospitals would work only to government established standards (if they want to get payment), effectively becoming government employees and profoundly changing their patient relationships. Very likely, a much more expensive private medical practice would emerge for those with the money to pay for it. Indeed, to a degree, such a system exists now , with an increasing number of doctors ( often the best ) refusing to accept Medicare patients and even in some cases refusing to accept the limitations of any conventional insurance.
I haven't even addressed the cost of such a system. Indeed even the current Medicare program is close to crisis - projected costs will soon require enormous increases in taxes.
A rather typical failing of authoritarian, so called progressive, politicians is that they seek to control and change the behavior of people ( as opposed to merely limiting it as in criminal law) - a gigantic task, given the complexities of human nature, and the fact that even so called stupid and uneducated people are quite able to see and recognize what suits their self-interest. In the ensuing struggle between bureaucrats and common folk, their elaborate "systems" are quickly corrupted, yielding mediocrity or poverty for everyone.
Examples abound from the failure of Leninist Communism which undertook to create a new "socialist man' ( and which soon had to engage in what they termed as "the elimination of the irreconcilables" which was in fact the mass execution of all who resisted. The system they created was in fact a bureaucratic tyranny led by Mafia-like gangsters. It yielded tyranny and relative poverty in both the USSR and the previously relatively wealthy Eastern European countries which they occupied after WWII.
In today's world we have the unhappy examples of Cuba and Nicaragua, mired in authoritarian tyranny and relative poverty, and of course Venezuela, one of the most richly endowed nations on earth, now undergoing an economic collapse ( and apparently a political one as well). What the end of the subsidies provided Cuba and Nicaragua by the hapless Bolivarian regime we're likely to see serious new stresses in these tyrannies as well.