Here's his "evidence:"
And here's his interpretation of said "evidence:"
"One of the dirty little secrets of the health-care system is that Medicare has done a much better job controlling costs than private health insurers." [emphasis added]
Medicare, owing to the power that is the Federal Government, can control expenses in a way that no insurer can, simply because the law says that it can. Not the marketplace, not the free and unencumbered exchange of goods and services: simply, The Law. Which Law, by the by, means that the costs aren't gone or even lower, they're just shifted to thee and me.
So again, Ezra, you're certainly entitled to your own (wrongheaded and disingenuous) opinions, but you are not entitled to your own facts.
[Hat Tip: FoIB Holly R]