The upside of buttons in a car is that they provide tactile feedback, so you can find your way around by fiddling in the center section, and keep your eyes on the road. A touch screen needs you to look at it in order to navigate it.
This times a million.
It's like how there are touchscreen remote controls for TVs, but anyone who does more than a little channel surfing prefers a remote with buttons that they can use by feel and memory, no looking, even in the dark.
It's why aircraft cockpits have differently shaped controls, too, and in a common arrangement.
A good vehicle has knobs and switches that you can tell apart by feel, and that are easy to find by touch or location alone, so you don't have to take your eyes off the road. Steering wheel controls are nice too.
OTOH, some of the worst cars were older Jaguars. Almost every button and switch was a visual duplicate of the others. Lucas hell.