No, I see your point, and I agree. These companies are almost guaranteed to cherry-pick those stats, so only a fool would take that as hard evidence. However, I don't think these stats flat-out lie either. If they show a self-driving car is three times less prone to accidents, I doubt the truth is that humans, in fact, are twice as good. I believe it's safe to assume that these stats at least point us in the right direction, and that seems to correlate with the little personal experience I have as well. If these systems really sucked as much as the most hardcore AV-skeptics make it seem, I doubt we'd be seeing any of these in use on public roads because the issues would be apparent.

However, the point I'm trying to highlight here is that I make a claim about AV-safety, and I then provide some stats to back me up. People then come telling me that's nonsense and list a bunch of personal reasons why they feel so but provide nothing concrete evidence except maybe links to articles about individual accidents. That's just not the kind of data that's going to change my mind.