> Those with type 2 diabetes are not producing enough insulin.
No, that's type 1. Type 2 is characterized by the body's resistance to insulin. So the pancreas produces enough insulin, but the body can't use it. It's true that this can lead to pancreatic damage because of overwork and shift closer to type 1, where not enough insulin is produced, but that's not the main cause of the illness.
This treatment is only for Type 2, of which only a minority needs insulin injections. Most type 2 is treated by a healthier diet and pills.
Type 1, on the other hand, is the one that absolutely requires insulin injections, and there is no cure in sight for that.