Agreed. You could also use food to craft a supply pack, but it would need certain amount of certain foods to do so, like, 4 fruits, 4 vegies, 4 meats, 4 drinks, something like that.
Or... It could all just vanish and you wouldn't have to juggle camping supplies items but it would simply add to the overall camping supplies value in the top right corner. Then, a LOT less item management.