Nonsense. In every nationalized healthcare system there is care rationing performed by government bureaucrats. Regardless of a doctor's opinion on medical necessity, some treatments involve long waiting lists or third-party reviews or are simply unavailable. That might be preferable to our current system in certain ways but let's not pretend that there are no trade-offs.

For example, let's say you're in England and your doctor decides you need Enhertu or proton beam therapy. That decision is meaningless because the NHS won't pay for them.