At this point the best solution might almost be legislation banning touch screens from cars and home appliances...
Legislate against what you actually want to prevent. Here that's locking features behind privacy violations and connections to third party hardware. In cars it is also controls that you have to look away from the road to use.
The gdpr is on the right track on this issue, for an example.
Imagine pan frying something on your range, the food splatters, and it changes the temperature on you. Now you need to adjust the burner back down (or off), but you can't adjust the temperature because the controls are now wet with grease. Better be quick to dry off controls and turn off heat before you start a grease fire. Or failing that, moving the pan off from the heat source...
Just ban them.
I'm not aware of other manufacturers, although Samsung also makes signage displays but it's not clear if they employ any "smart" features. Some also use Tizen which is Linux based and should be open enough to allow rooting.
I think people like the 'smart' features, they just want more control over the device and not for it to be crippled if it's not connected...