Even a car that you are not allowed to drive at all is still a car. It just isn't your car.

Sure. But a taxi is a car yet it doesn't quite take up the same mental spots. People will say they came by taxi instead of by car. People won't say they don't see the value in selfdriving capabilities or repairability because they can just get a taxi. Etc

Exactly!

Our argument shouldn't be about the device's capabilities, but about its ownership. And increasingly, as this enshittification progresses, the person buying the device is becoming less and less its owner.