Unless every last vehicle on the road is suddenly converted to cooperative autonomous systems, the human element and unpredictability will still be present. Even then, wildlife, pedestrians, and unpredictable events will pose a challenge to autonomous vehicles.
In a perfect world, FSD would help. In the real world, Tesla’s FSD is a beta feature being spearheaded by a stubborn egomaniac that thinks he knows better than the people actually doing the engineering work. And frankly, I’d rather not spend my money for the privilege of being driven into the side of a concrete barrier down the highway because somebody wants to cut costs and place style above function.