It allows UI designers to add nearly endless settings and controls where they were before limited by dash space. It's similar to how everything having flash for firmware allows shipping buggy products that they justify because they can always fix it with a firmware update.

Is this true given all the chips modern cars have, all the programming that must be done, and all the complex testing and QA required for the multitude of extra function?

I would gladly gladly keep my AC, heat, hazards, blinkers, wipers, maybe a few other buttons and that's it. I don't need back cameras, lane assist, etc.

I find it hard to believe it's cheaper to have all the cameras, chips, and other digital affordances rather than a small number of analog buttons and functions.

One of the reasons I purchased a (newer but used Mazda) was because it still has buttons and knobs right next to the driver's right hand in the center console. I can operate parts of the car without even having to look.

(another reason was because it still has a geared transmission instead of a CVT, but that's a separate discussion)

This is often repeated but I don't believe this for a second. I have an 90s vehicle which is based on 60/70s technology. A switch for a fog light is like £10 on ebay for a replacement and I know I am not paying anywhere near cost i.e. I am being ripped off.

> It's cost, not competence.

This implies it's a consequential cost. Building with tactile controls would take the (already considerable) purchase price and boost that high enough to impact sales.

If tactile controls were a meaningful cost difference, then budget cars with tactile controls shouldn't be common - in any market.

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.

I’m not sure if this is actually true for the volumes produced by the big carmakers. You’d very quickly get to volumes that make the largest component the material cost.