> Adding a touchscreen to the vehicle's infotainment system is absolutely not required for text entry when you are already connecting a device with a touchscreen to that infotainment system.
It is, because a lot of car-makers intentionally make the phone physically inaccessible by being out-of-reach when plugged in for CarPlay/AndroidAuto (they don't want to be complicit in texting-while-driving deaths - would you?). Most societies agree it's okay to use a large touch-screen keyboard thats part of the dashboard because (at least it's meant to be) positioned such that your eyes can still see the road ahead to some degree, and big chunky virtual keys go a long way too.
...telling me to fumble around for my iPhone, then somehow unlock it, get to the right app, then precisely poke its tiiiiny keyboard keys and hope autocorrect doesn't get it wrong (and it will) just to enter a new navigation address when I'm trying to negotiate traffic is a bad idea.