So can someone who owns a modern car please help me understand why you would buy a car that has the mere capability to be remotely shut off?
A vehicle is a personal safety device, that allows for independent travel away from bad things and towards safe things. That is one of the most critical aspects of a vehicle.
Assuming that one of the most critical times you might need a vehicle is fleeing oppression, having a remote switch off as a possible vector to impede your escape is an existential threat and basically makes one of the core reasons to have a vehicle moot.
My assumption is that most people are not thinking about their vehicle as one of the most critical tools for freedom.
Having traveled the world and lived in war zones, vehicles are life savers and it’s insane to me that anyone would allow a possibility for someone else, specifically corporations and governments with major power levers, to even have the ability to stop that remotely.