@Debandez you may also run into those people who know about the effect of high carb foods on blood glucose but refuse to modify their diet.
Although my best friend is also a lower carber who's controlled her Type 2 diabetes by modifying her diet (she inspired me and helped me initially), we know several people who refuse to change despite knowing what carbs do to blood glucose.
Particularly depressing is a couple we know who are both Type 2 diabetic. He has always refused to change his diet in the slightest. She tried eating low carb for a while but has given up completely. At a recent event we attended, they brought and ate multiple sandwiches with white bread, potato salad and apple crisp and drank multiple cans of regular Coke. Neither test their blood glucose at all anymore and both are on multiple meds which are increased every time they have their hba1c checked as it has continued to rise. She's a very bright woman who's well read and knows about low carb. She ate low carb for a while (despite her husband) and then decided to take medication so she could have bread, that has now expanded to not excluding anything including sugar, regular soft drinks, potatoes and other high carb foods. She has put on an additional considerable amount of weight very quickly recently and her insulin resistance has probably worsened. It's very sad to be around them yet ironically they pity those of us with well controlled blood glucose levels because we watch what we eat and won't join them.