Earlier quoted context omitted.
> Just like nowadays you can't buy a "dumb TV" You can, if you buy used. I know it's weird to buy a used TV, but they cost pennies on the dollar and you can get some really nice models without today's ubiquitous annoyances. Same goes for cars. If enough people refrain from buying new cars, and put in the effort to keep their older cars on the road, maybe manufacturers will take the hint.
Or just modify them. People used to replace their stereo, I suspect there would be a real market for add free infotainment systems.
The combination of weird speaker ohm specs, CAN Bus controlled factory amplifiers, integrated vehicle information systems (where the display is across several screens) in modern cars and the abandonment of the DIN stereo size make doing aftermarket installs harder and harder.
The Chinese are producing some astounding things - you can buy a drop-in centre console replacement for an older Chrysler 300C that looks factory but has a big touch screen, Carplay/Android Auto and a dongle that interfaces with the CAN bus based amplifier and steering wheel buttons. I suspect for really popular cars this will be an option, but it can't be done for every car released.