I think i have worked out why Mars is not understanding us, and why he tells us he is right, and we are wrong.
He has found a way of eating (low GI) which works for him, while using insulin. That is a good thing.
Unfortunately, he seems to think that his narrow understanding and specific treatment pattern should apply to everyone, and wants to tell us all what is best for us, but this won't ever work - and is REALLY not a good thing - and could be harmful to several of us.
We all vary in our reactions to food, our medication needs, and our understanding of diet and nutrition, especially in view of recent diet and T2 research. He doesn't grasp the range and diversity of the Diabetic spectrum, and he wants us all to shut up and do what he says.
I think he is going to be disappointed.
(So folks, did i achieve the polite but pompous tone i was aiming for?
)