This blogger indeed uses a dizzying amount of graphs, but doesn't mention until the end that he has built his entire argument on the assumption that Americans "choose" to spend their higher income on health care.
Incidentally these patterns are not only found in health care, the basket of goods has changed and continues to change as countries get richer: https://randomcriticalanalysis.wordpress.com/2017/05/09/towa...
P.S., I wrote the blog post.
http://mason.gmu.edu/~rhanson/EC496/SOURCES/LUXURY.PDF
And the better data on price suggests US actually isn't unusually expensive for a high income country and so on and so forth. Much data points to higher volumes of health goods and services as we chase diminishing returns as a society.
And yes, the biggest problem in the US is unneccessary tests, procedures, drug consumption, etc., and the cause of that problem is a system which is built around maximizing revenue instead of maximizing public health.
Here are some papers that touch on some of these more fundamental theoretical issues:
Approx. zero people reading this will believe the conclusion, but RCA argues that the US is not really an outlier on healthcare costs.
There's a dizzying amount of data and statistics levied for the argument. It's a fascinating read even if you don't agree just because of how much is put into the argument.
https://randomcriticalanalysis.wordpress.com/2014/11/24/nati...
https://randomcriticalanalysis.wordpress.com/2016/09/25/high...