>for the types of situations where autopilot was used, human drivers actually had fewer accidents on average.

Do you have any source for that? As far as I'm aware, there simply isn't enough public data released to actually make an unbiased comparison here. So whichever side of this you're on, you can always twist the data to confirm your point of view. Only when Tesla and all other carmakers begin to hand out all of their data, we will get a useful comparison.