Road design is part of it but improving road design only improves ‘reasonable’ drivers, and things like chicanes, lane narrowing, and speed bumps cause issues for larger commercial vehicles like buses.

Persistent asshole drivers will still drive drunk or drive dementia, run red lights, or go three times the speed a road is built for.

“the systems and environments we place people in” is not just the road. It’s the licensing regime, the society that makes having a car necessary even if you can’t drive safely or afford to maintain it, and that doesn’t mandate effective ongoing training.

You also want a weapon you’re familiar with and that you can control. In medieval farming communities, chances are everyone’s used a pitchfork. Axe less so.

Pitchforks also work better as infantry; they’re kind of a mini pike so they’re useful in a mass and against horses. Swing an axe in a mob and it’ll hit your neighbour.