"When the facts change, I don't change my opinion."
They went through the harder track of FDA approval for medical devices.
I have no idea why you seem to think the primary way for the FDA to approve of new treatments is somehow... not them approving of it?
The wording is really poor. "Pre-market authorization" is their approval process. As in, you don't get to tell anybody that your device has any medical benefit unless we've assessed it.