I have Medicare as my primary, and my secondary is United Health Care through NY State as a retiree. I have no complaints at all. I had four abdominal surgeries from 2010 to 2015, and never had to pay anything to the hospital...not even a co-pay. I also have prescription coverage through NY’s Empire Plan, and my medications cost me $5.00 or less. I’m in my 17th year of retirement.
I am new to medicare, so my comment really related to my experiences under private care. But I bet far more people agree with your perspective than are opposed to it.