For one, the human has a brain and human sensors are less easily fooled despite being able to "see" less. LIDAR technology combined with ML is so poor that it can easily be fooled by a stop sign with a sticker on it.

Source:[https://spectrum.ieee.org/cars-that-think/transportation/sen...]

A human has context where a machine does not. A human automatically knows that a ball being thrown in a yard can end up in the street.

A learner's permit also requires that a licensed driver be present. So there's a built in redundancy for decision making.

Machine learning or not, computers are simply profoundly stupid.

I'm not against autonomous vehicles but I'm fairly skeptical about them. They've improved a lot in a basic way but they don't handle corner cases very well. Unfortunately, driving involves a lot of corner cases due to the complexity of the environment.