This exploit upgrade is requested aproximately once per month ...
If Larian is concidering it, i would rather recomend whole removal of either food, or carry weight, or both ...
There is no exploit. You can send anything to camp, and as there is no reason to carry food around. Poor design, perhaps.
Perhaps, minicaps shouldn't have access to stash? That way delving into a dungeon could have some feeling of danger. Of course, that would require some limitation to fast travel, as otherwise it would do nothing. Not that I think it would help. As it is I don't have to access stash for food as I easily can store couple camp supplies on my highest STR character. In EA one if given far more resting resources then one is capable of reasonably burn through.