I don't believe that my analogy is false, or that supplemental coverage would be allowed for the kinds of care being provided by M4A. I think perhaps a more on-the-nose analogy would be that "Netflix is not allowed to distribute anything that Apple TV is distributing or claims to distribute."

Again, I'm not making the claim that it's what's in the policy, but it's what Bernie has said, and others have echoed. Reasonable people can disagree on what policies are practicable or likely, but if you're a person who believes their health insurance might change based on those statements, then it seems like a warranted fear.