Although it's great to make insulin more affordable, wouldn't it be better to attack the source of the problem? In my opinion the biggest contributor to diabete

Although it's great to make insulin more affordable, wouldn't it be better to attack the source of the problem? In my opinion the biggest contributor to diabetes is our diet, we eat too many carbs and too little fat. Since fat delivers 9 calories vs 4 for carbs, we humans could suffice with eating way less when switching to fat. The food industry would suffer, but it could be a win for the environment.