I dont mean the car is controlled 24/7 by a remote controlled person.
Lets assume a senario in which a tesla auto-pilot is being monitored by the person and the person only steps in remotely in case of fatal issues/extra-ordinary circumstances.
People are terrible at being "on active standby" like that. If they have to be really alert to the situation, it's better if they're really driving the car themselves than expecting them to recognize a bad situation and take over in time.