You make assumptions that he’ll actually cause harm. I’ve never hit a pedestrian in my car. I’ve never hit someone on a bike. No one close to me that I know of has either. I know quite a few people that have had their cars hit by drunk drivers or reckless drivers.
I don't think that assumption is required here. Whenever predicting the future, it must be dealt in probabilities, not certainties. So if you're playing poker, you must evaluate the strength of your hand based on the cards dealt so far. Retroactively saying that a decision was made correctly because the cards drawn favored it isn't a useful analysis.
In the same way, it isn't necessary to assume that he will cause harm, only that it increases the likelihood of causing harm. With a larger car, a driver is less able to see pedestrians, and children/shorter adults may be blocked from view entirely. Pedestrian injuries and deaths are on the rise in the US, opposite the general trend elsewhere. The primary difference is the prevalence of unnecessarily large cars in the US.
The probability of dying from a car as a pedestrian in 2020 is 0.2% and that includes people committing suicide by car. Dying in a traffic accident with another car is 1.1%. If you're playing the odds in poker, you worry about the latter more than the former.
