Socialized medicine requires rationing. They will find any number of excuses to say “no” that are required to meet their spending targets.
There is no other way to meet demand, short of a completely free market.
You either limit costs by stopping investment in new technology and making health workers govt employees, or you limit demand through extended waiting times or the use of arbitrary criteria to exclude services to people who otherwise require them.
It’s the only way socialized medicine “works”.
Socialized medicine is great if you're 20 and break your arm. If you're an obese 65-year old smoker, not so much.