Earlier quoted context omitted.
I have a Model 3, and ever since I added Alexa Auto, I have no reason to use the touchscreen other than adding a destination to nav. Climate is set to auto. All other configurations automatically switch between my preferences and my wife’s based upon who is in the driver’s seat. I was a skeptic, but now I’m a believer.
You like the touchscreen now that you don't have to use it? So in your case it wouldn't matter whether there is a touchscreen or not, because you admit to not using it. There's no reason a car can't have physical buttons and voice control
Cost and complexity - dials are way harder to do than a touchscreen.