The food/supplies system currently marries a complely vestigial and irrelevant mechanic to a lot of tedious and unnecessary inventory busywork.
It's the worst of both worlds, really.
If they want to keep it as it, they could at least take a page from what Lords of Xulima is and make food an "abstract resource" that raise a counter in a corner (already there, incidentally) without all the cluttering inside our bags (and/or the need to juggle things from local inventory to camp chest and viceversa).