One important fact here is that everything the pilots will need to reach quickly in an emergency still is a physical button. It's just the more "nice to have" things (e.g. programming the cost factor of the engines, putting the route into the autopilot) that are done through the screens. Though, even those inputs are largely done with a funky kind of mouse+keyboard. Actual touchscreens are largely relegated to tertiary functions like airport information displays.