Are you sure a set of robot arms, trained over many generations to minimize motion/water/energy use, while also minimizing dirty dishes, would necessarily use m

Are you sure a set of robot arms, trained over many generations to minimize motion/water/energy use, while also minimizing dirty dishes, would necessarily use more water/energy than a dishwasher? What if the dishwasher is sometimes run half-full? And the arms can put clean things away!