[nyc640]

I think it's arguably both. Bad UX means that it's difficult to learn how to do things and can make it easy to press the wrong button even once you are used to it.

However, having driven my share of cars that are exclusively touch screen, even when you know where something is (capacitative volume buttons, touchscreen climate change controls), it takes too long to find and adjust the settings compared to having physical knobs that you can easily reach over and adjust without taking your eyes off the road.