Fact is, the reply will be the same as it always is.
Yes, there is debate (Ken being example #1, also a Doctor, in total disagreement with this writer).
Cost (to the taxpayer and responsible insurance buyer) is not something that side cares about. Coverage for everyone no matter what is the priority, not cost.
Denials are also not an issue they care about, because they belive in the wisdom of the State to deny only what should (in their view) be denied, and approve only what should be approved. They see this system as a net positive, not a net negative, it's a lynchpin for their argument fo "savings" in such a system.