I agree with you. My friend who I have known for 40+ years weighs 15 stone and has blood sugars that are on the low side of normal. I was 9at 6lbs when diagnosed with an hba1c of 125. I have to keep to around 20g carbs to keep normalish blood sugars. So I definitely feel that weight gain is not the whole story. I just don't think my my body can cope with carbohydrates. Actually I am apparently 'in remission ' at a higher weight (9st 12lb) than when first diagnosed with T2D.