This article is political and can and should be ignored. Being a doctor is extremely difficult, and pays about as much as a sinecured, pseudo-academic "economist" who sells analysis and lightly dressed up op-eds in the Economist to the highest bidder. These articles get picked up by people who are predisposed towards the argument it is making because they have had a bad health care experience or want to take someone else down. It pits patients against doctors, when the real money is being made by the hospital systems and insurers who add little value but have massive influence over policy (much more than AMA).

The AMA should stop opposing single payer, though. That is the key difference in the US health system and other national health systems with better outcomes.

edit: just look at the section of the Economist it is in: United States | Medicine’s gilded age - very professional.

last edit: What percentage of the total healthcare costs in the US are attributed to physician salaries? That is the theoretical maximum improvement to the cost of care delivery, if you dropped it to zero. Economics 101.