Hidden interface controls that affect usability

I drive a Toyota that is nearly old enough to run for US Senator. Every control in the car is visible, clearly labeled and is distinct to the touch - at all times. The action isn't impeded by routine activity or maintenance (ex:battery change).

Because it can be trivially duplicated, this is minimally capable engineering. Yet automakers everywhere lack even this level of competence. By reasonable measure, they are poor at their job.

It's cost, not competence. These days making a touch screen is easier and cheaper than manufacturing and assembling lots of little buttons and knobs.

Not just that, wiring it in to the single control bus is easier, otherwise you are stuck doing an analog to digital conversion anyways. Even new cars that have separate controls, these are mostly capacitive buttons or dials that simply send a fixed signal on the bus (so your dial will go all the way around, because it isn't actually the single volume control on the radio, but just a turn the volume up or down control).

Most of the cost savings is in having a single bus to wire up through the car, then everything needs a little computer in it to send on that bus...so a screen wins out.

Most of the seeming analog controls on cars switched to digital in the 1990s. The digital control bus saved several hundred dollars per car. It still looked analog until around 2010 when touch screen started taking over.