IMO it's about UX than touchscreen vs physical controls.

I bought a new Toyota tacoma and it has the worst UX I've seen in a vehicle. The touchscreen UI is bad, the physical button layout is terrible also. It took me a good 5 minutes to figure out how to turn off the truck bed light. The steering wheel button placement is also horrible.

Even the push to start button has like 3 different modes (which I don't fully understand). A number of pushes for accessories only, accessories + power windows, ignition.