You know...I really don't know the answer to that one, but I think the point of the article was that if faced with a situation in which you truly don't have any good low carb choices, to do what you can to miniminize the damage. Even if eating those things doesn't throw you out of ketosis (eating just one, not all of them at one time or in one day), it's certainly likely to provoke some cravings that you really don't want to have to deal with if you can avoid it.