Don't we have automated systems all around the world with the same element at play? Elevators? Trains/Subways that are autonomous, robotic lawn mowers, self-driving little delivery vehicles on sidewalks, all kinds of automated machines in factories that kill people, etc...

I feel like you could come up with long lists of cases where there is no direct human to blame. Someone may be at fault down the chain, but nobody who was directly controlling the machine. Just like if a mechanic screws up my brakes and I end up crashing, it wasn't directly me who caused the crash, even though I was sitting in the seat.