Unfortunately the buttons are likely still controlled by the central computer rather than having standalone functionality.

When I was a kid if I wanted to turn off the radio I simply hit the “off” button.

Now in my Subaru when I start the car I have to wait for it to wake fully up, while it could be blasting out music very loud (think: if the music when I turned off the vehicle was softer, but now a commercial is the very opposite of soft) until pressing the off button finally thinks through all the ramifications of what it means (in the context of prioritization in relation to other tasks) to actually turn the sound “off”.

I love my car but I definitely prefer the older approach when off = “off”.

So button vs. touchscreen is only part of the underlying set of issues related to computerization and, for some vehicles, the increasing trend towards SAAS.