I agree that, if let's say a couple with no kids has a mass stash of food that is more likely to go bad before they consume it, is hoarding. One couple I watched last night organized the food by exp. date so they were actually eating the food they purchased and they would use the extra money to go traveling. But I also noticed the mass amount of soda and candy some of these people purchase!
The amount of time they go through to find the coupons, organize, etc. For some people was equivalent if not more to that of a part time job! Personally I would LOVE to save that much on groceries and go get hauls that big once a month maybe or as I'm running out but I can't see myself dumpster diving, going door to door picking up coupons, stealing them from other peoples Sunday paper, or sitting in front of the computer looking for them!