Again, of food heals without short rest, what is the point of short rest?

Everything has its unique purpose. Potions are magical and mend wounds. Food does not. Food is expected to help recover strength in conjunction with resting, mending armor, bandaging wounds. Short Rests = about an hour of time where characters mend armor, bandage wounds and recover some of their stamina and energy.

That is why you have short rests at all. If food alone fixes sword wounds, then just get rid of short rests. What do you need them for then?