If something is broken to the point that the car can't heat up, yet it's cold that there is thick ice on the windshield I would think twice about driving. Even if you could remove the ice.
No one said anything about anything being broken, just about the ability to remotely heat up the car before starting to drive. Having a heating and having a remote controlled heating that works with the car switched off are two separate things.
Sry, what I meant to say was "No one spoke about the complete heating being broken. Heating is a basic requirement in a car imo. Remote-controllable, engine-off heating is not."