That is a massive assumption to be making. That the driver can see and react to every obstacle. Not to mention there are videos where the Tesla reacted before a

That is a massive assumption to be making. That the driver can see and react to every obstacle. Not to mention there are videos where the Tesla reacted before and on behalf of the driver, saving them from an accident. The "lane assist" (what it should be and is called by other manufacturers) spots any number of obstacles that the driver failed to see - takes over - and saves the driver from an accident. Or reacts faster than the driver could react - thus saving the driver. That is what it is doing. It is not driving your vehicle. It is assisting in driving your vehicle. It is still possible to drown with a life vest on. That doesn't mean you shouldn't wear one because "if I'm expected to stay above water - what is the life vest doing?"