If your smoke detector manufacturer changed how the test button worked with an over the air update, and as a result you failed to correctly test it, who would be liable?
Much in the same way, if someone cannot figure out how to use their defroster because a UX engineer decided to make it just so, the Tesla owner just drives off with a mostly iced up windshield because, and the Tesla owner gets into a crash because it's 7:00am on a cold winter Monday and they're running late, does Tesla share some liability for changing how basic safety equipment works?