At least I can get the volume and temperature knobs by feel.
It's been over a year since I had an Audi A3 with the system, but I still remember that going from anywhere to Android Auto would be pressing home, then just giving the wheel a big turn clockwise, then back one click counter-clockwise and confirm. You got used to the common operations, and you could do them blindly after a while. In a moving car, a touchscreen is almost always problematic because you need to see if your finger is going the right direction to compensate for car movements.
Controlling the temperature or music volume will be done while driving so they should be actual buttons that your muscle memory will reach with no mental effort or distraction. Adjusting the suspension settings or typing in a GPS address can be done via a touchscreen since it's unlikely you'll do it on the move and touch offers a better experience for this.
however, address input should be primarily by voice control rather than touch entry. changing destinations (for whatever reason) mid-drive on a navigation system is dangerous and somewhat common, and voice control is the best option for keeping your eyes on the road (absent a passenger who can do the touchscreen data entry).