The only conclusion we can draw from the Waymo response has to be that they have something to hide. If you look at the aviation industry, they actually learn from the mistakes and make improvements. This sort of learning should be available across all autonomous vehicle companies so that each doesn't have to make the same mistakes.
On the AI point - using mental health conversations to teach AI - Didn't anyone learn anything from when Microsoft tried this with their Tay chatbot ?
Its no longer the voices in my head, now the chatbot told me to do it ...
Seems to be a trend here about people not joining up the dots and learning from other people's mistakes.