The promise of self-driving cars being safer than human drivers is also kind of the whole selling point of the technology.
Sure, but the companies building them are just shoving billions of dollars into their ears so they don't have to answer "who's responsible when it kills someone?"
What? No? The main selling point is eliminating costs for a human driver (by enabling people to safely do other things from their car, like answering emails or doomscrolling, or via robotaxis).