Are the different laundry programs on a washing machine due to the design failure? My oven has separate knobs for temperature, heat distribution and grill; is t

Are the different laundry programs on a washing machine due to the design failure? My oven has separate knobs for temperature, heat distribution and grill; is that a design failure? My car has both a steering wheel and a separate indicator light control; rain sensors and a manual wind screen wiper setting; light sensors and a manual setting for the headlights. Are these all examples of designers' inability to make decisions?