L/UL refers, in my understanding, more to the BASE PACK WT., not the "full skin-out wt" as it is known.
obviously, if one going for 2wks unsupported & not planning on fishing, trapping, hunting, foraging for food, then that food must be carried. one will never achieve a <10lb total pack wt if 2wks of food is included. same holds true for water - sometimes you just must carry a lot of water.
does not include consummables (i.e., food, water, and fuel - some would also exclude other items, e.g. bug dope, TP, etc.).
what is actually more impt to me is what is the max. wt. i will be haulin' around w/me (i call this "true pack wt"). i can say i have a 7lb pack, but if i'm haulin' 2L of water & 5days of food with me, i've got nearly 19lbs on my back. on a longer trek, if that wt gets too high, then i would have to find a way to lighten up w/o leaving any food or water behind. leave some gear behind or use lighter substitutes for necessary gear (or shorten the trek or resupply pts) would be my alternatives.