I'm just curious how anyone can weigh the food they are taking without weighing its containers! I've always weighed my food as packed, which necessarily includes the plastic bags in which it is packed, and I frankly don't know anyone else who doesn't.
Admittedly, I never have weighed the garbage I have when I come out. I do know it's a lot lighter than the food I take in, though, simply because my pack is far lighter even the second moring. You could, of course, save the weight of the garbage by leaving it behind, but I hope you never do that! I suppose, to be technical, you should include the weight of those plastic bags as base weight, which you could easily do by counting the number of pint freezer, quart freezer and sandwich bags you use for your food and weighing the equivalent number/size of clean bags. I prefer to focus on skin-out weight, though, since that's what my knees and feet have to carry.
For those who can stand the flavor, such as it is, and the effects on their bodies, of commercial freeze-dried food full of preservatives (yech!) or of chemically treated water (double yech!) fine. I'd rather carry an extra ounce or two of dehydrated home-prepared food and a Sawyer Squeeze. If I'm going to vomit up the food or water, I have to carry at least twice as much!
You don't need a cozy if you don't mind food odors on your knit cap, jacket or whatever else you use. Of course, in bear country you'll have to put the cap, jacket or whatever in your bear bag. Personally, I'd rather wear my cap or jacket at night and carry the extra half ounce of cozy. Of course if you prefer your food cold, then you don't need a cozy or a pot or a stove, and that will definitely save weight!
We could get into this sort of hair-splitting with every system. For instance, I should leave out the weight of the dry flies inevitably left behind on trees and bushes out of the base weight of my fishing gear, putting them in consumables. Or the 1-2 bottle caps I used to lose on each trip when I was using Platy bottles (I switched to Evernew 4 years ago because their caps connect to the bottle so I don't have to take spares).
BTW, I have never seen either camera or fishing tackle listed in anyone's published gear list. I can't believe that nobody takes either, particularly when they publish pics of their trip and talk about the fish they've caught. Just how complete are these published gear lists?
As long as every item is included in the weight, what's the difference? What happened to simplicity?