What if the chance is actually 1%? What if the cost of repairing it is bigger than a new car? What if, as you said, cars got cheaper, but not so cheap to be disposable? What if making if repairable has the side effect of making it less durable?

Just nobody upthread is asking any of those questions. It's not circular, it's a plain old and boring cost vs. benefit assessment to be done over government intervention.