If you give every shitty driver a self driving Tesla maybe you would do something to make roads safer, but if you’re just giving it to higher net worth individuals who place greater value on their own life, you haven’t even made a dent in traffic safety.
In fact in some cases all you’re doing is making drivers unsafer because the autopilot encourages them to not pay attention to the road no matter how much you think they are watching carefully. The men killed in Teslas could have all avoided their deaths if only they had been paying attention. If I see a Tesla on the road I stay the hell away lest it do something irrational from an error and kill us both.