True, but i think life support terminology needs to change. Life support is for breathing, not for eating. If we can breath on our own than we should be allowed to eat. If I was in a PVS and could breath, I better get fed! If I can't breath than let me go! We have gone overboard when deciding to stop feeding someone that can breath!
Yes, this is why I figured that DNR orders would include no food, sad as it is.