People often miss a big point here. Delivery truck crashing into car is a human mistake. There was another human involved who could have severe punishment including death, loss of job, loss of wealth etc. Humans killing 10,000 humans each day in driving mistake is not same as drones killing 10,000 humans each day due to random tech failure. Even if drones killed only 1000 humans and there was a net reduction of 90% of deaths, I bet it would not be acceptable to larger human society.

You can do a thought experiment: Let's say airplanes failed at 100X of current rates but it was relatively still less number of deaths if people drove that distance by themselves. Would you be able to argue airplane failure rate was still acceptable? For drones, I bet there would be an immediate movement for banning the whole thing if there was a single drone ever fell on playing kindergartners randomly. This is one situation where just bringing data and making rational arguments don't work.