So far Ive seen two way to go for BG control. Exercise with meds or low carb with meds. Im sure there are some in the middle that can pull off moderation (moderate carbs, moderate exercise, etc), but they are the minority, IMHO.
The exercise route means when you eat, you exercise. if your a bit high, you walk the dog. You can pretty much eat away so long as you compensate with exercise. I know of a few PWD on this forum that control their D this way and it works wonderfully.
The other route is low carb. Pretty simple, your essentially allergic to carbs, so cut them out. You replace your carbs with fat and keep your protein intake around the same as it would be on a “normal” diet. I personally use this method and have seen amazing results with it. I exercise a few times a week, if that ( i try to more and am hoping chasing a 3 year old counts).
What the ADA seems to push is moderation all around. They tell you eat whatever (including candy) you want in moderation and just cover with insulin. You need to exercise (in moderation), you really need the “nutrients” in carbs (in moderation), and the only thing it seems you dont need in moderation is medication. That you can have tons of without fear of side effect (strong hint of sarcasm here). I dont mean to be offensive and frankly am jealous of those that can pull of minimum deviation and a low A1C with just moderation. They are amazing. I just dont see the masses (myself included) being able to survive on this regiment. Its far easier to open or close the door than to control things trickling through.