I see it this way. Alcohol is off plan, correct? If I was too drink too much, get wasted, once a year or so no one in their right mind would argue I am an alcoholic or suffer from alcoholism.

So why is it acceptable to argue that planning a cheat 6 months in advance is somehow related to a carb addiction?

It isn't. Yes, cheating invites trouble for some people but deciding you want to eat ice cream once after being more than half way to your goal weight isn't weakness and isn't addiction. If I fall off the wagon, you'll all be the first to hear about it. I'll let you confirm your suspicions. But don't call it an addiction if it isn't an addiction.