The second factor is a factor just not a common one, which is why I listed it second. I’ve never personally seen a wiper motor die, but I have seen the transmissions break, and wiper blades that get torn and wiper arms get bent in (extremely) icy conditions. Your point about most drivers being distracted & driving like shit kinda makes it a bigger concern, since there’s no way distracted drivers would notice the additional wiper of a “'self-driving”’ camera has gone bad or gotten bent.
I don’t disagree with you on the other points though. There are NO level 5 fully autonomous self-driving cars currently, only pretenders that give people who can’t pay attention a false sense of security.
I’m scrolling to the bottom with ad blocker disabled. That ought to boost the metrics a scosh.