The touchscreen frees you from the complexity that comes with giving switches alternative modes, and gives you the mass to have multiple copies of critical swit

The touchscreen frees you from the complexity that comes with giving switches alternative modes, and gives you the mass to have multiple copies of critical switches. Also multimode switches greatly increase the complexity and failure modes, so they need to be done so that if a switch is triggered in the wrong mode its recoverable (eg: the switch for aux radio power isn’t also the undock switch). When you get to the point of having displays for the switches why not go full touchscreen and eliminate all of that cost and complexity of a bunch of tiny displays?