Yes and no, the fact that there is a limit at all is because it does have carbs - and those carbs must be counted against your 20g allotment (or whatever it happens to be post-Induction). But the further restriction is to ensure that you have plenty of carbs remaining in your allotment to spend on the good veggies. Otherwise, people would take 20g of carbs from heavy cream and no veggies and think they were doing good.