NHS is at least sometimes prescribing what is needed to SI subcutaneously.
All who contributed to the understanding SI was violable in any way, be it sharing here, sharing in person. Informing their doctor that is what they do are part of that progress as well as the suppliers who make the effort to sell.
Seems to me that change often happens that way is is often not the result of a protest, or a decree. People practice it and then it becomes the norm.
That subcutaneous is effective as well as IM would be a breakthrough if it was tested and approved. Instead those they took the risk are part of it being accepted.
The diabetics who did their work paved the way for the rest of us.