Say your car had a touchscreen with fixed climate buttons which never move or change. What’s the difference?

Physical buttons give you tactile feedback for location and activation, but are more expensive and unreliable.

Soft buttons can be updated, improved, usability fixed. They can be overloaded to control more features.

There are damn good reasons spaceships, planes and phones went glass cockpit. You just want the handful of constant-use features to be physical controls.