As I’ve understood it, this notion is a fallacy.

Some drivers are “better than others” but there are no “good drivers”.

Everyone gets tired, everyone’s gets older, everyone gets distracted, everyone drives in a new location (potentially with a different driving style).

I don’t know when it tips to be better off with the computer, but I’ll feel comfortable as soon as the crash/fatalities rates are equal or better than Uber/Lyft.