You posted a source yourself:
https://news.harvard.edu/gazette/story/2018/03/u-s-pays-more...
Salaries are almost twice as high. Those other countries also tend to have higher taxes and other salary deductions, so doctors earn less.
> Other countries have better health outcomes, so that pretty much kills your “worse service” claim.
No it doesn't. Not every US citizen actually receives the service, because they want to (or have to) save money, kicking the problem down the road, exacerbating the issue. Americans also tend to be more obese.
You call the "cancer survival" rate a cherry pick, but it's actually a good indicator how good the actual treatment is and how timely it is administered.
> Rob Delaney is a great example...
One guy's opinion isn't "evidence" either. I could give you individual health care horror stories from single payer countries, but that would be emotional manipulation.