None of this is making any sense. There is no cure for T1 Diabetes and it is lifelong. There is no reason to have any of these requirements, middlemen, authorizations or whatever.
There are many different kinds of insulins at different prices, and apparently, in the US there is not though political will to pay for any choice of them as even the federal government restricts which one it pays for.
https://www.healthline.com/diabetesmine/new-medicare-program...