I wonder if there will be a resurgence of "dumb" cars once people get tired of and become more aware of the disadvantages of these overly-complex systems, like has happened with phones; IMHO one of the very few things a touchscreen is useful for in a car is a GPS, because that's a relatively complex system which can't really be simplified to physical controls. Everything else should really be knobs and switches. How much of a market would there be for a "dumb EV", basically the exact opposite of a Tesla but still electric, with only the bare minimum of electronics and software? Imagine a car whose interior looks like one from the late 70s/early 80s, with all analogue controls and indicators, except that it's actually an EV.
The other big disadvantage is the failure mode: if the screen fails, a whole set of functionality becomes inaccessible, whereas a single switch failure won't affect any others.
The other big disadvantage is the failure mode: if the screen fails, a whole set of functionality becomes inaccessible, whereas a single switch failure won't affect any others.