But that's exactly what will happen when health care is "free". There will eventually not be enough money to pay for everything for everyone, so someone will have to decide who gets what, and how much of it. That someone will be the bureaucracy created by the new system.
It will cost a fortune to run, it will be unbelievably inefficient, and will be accountable to no one but itself.
Deny it all you want, but just watch.
decides who gets what and how much of it: the private insurance companies. They can refuse to insure people with pre-existing conditions, deny claims for care that the patient's doctor orders, and so on.