Atkins, and modifications of that method do not shut down Carbs completely, they say, and quite correctly IMO, that too many Carbs will cause too many problems. The same could be said for fats! It's the balance that Atkins discovered was the problems..
That appears to be the struggle that he had with the medical commute, it turns their pyramid on it's head.. They have for years had Carbs a the base of the foundation of a healthy diet, well that became the problem.. They also condemned meat consumption.. I now believe that they were corrupted by the "save the animal, at the experience of whatever else". That corruption caused millions of people their lives, and would continue if it wasn't for doctors and people of courage that forced the issue, and changed the direction.