I'm not sure how to phrase this but here goes...
I don't follow a exteme low carb diet, I use my insulin delivery and where I need to restriction of portion size of a particular carb to get good results..
But It is essential that diabetics are trained in two areas, firstly good monitoring practices, they also need to understand all the different types of carbs there are and how these effect them as a individual...
This then enables a diabetic to decide what is best for them, be it that they can use there medication or insulin to counter react the carbs, or whether they need to restrict a individual type of carb, or come to the conclusion that they really have to avoid that type of carb completly if they want to maintain best control...
I think that it is important to have knowledge and tools that enable a individual to decide how they gain there control as they are more likely to maintain good choices and good control long term, than they might if they feel that they are being forced into something that they are unhappy with...