Having read this entire comment sub-thread I think you should spend some time operating some small and nimble piece of equipment in an open pit mine, a rail yard or a harbor. The rules on the road are not perfect but they are not arbitrary and exposure to even bigger size differences makes the reasons slightly more obvious.
It does. Have you read it? It shows that pedestrians are at fault in a large percentage of accidents. If we want to change that, then we have to change the infrastructure design. Not just shift blame within the existing system. Just look at their positive example in their article of Toronto having 67% of pedestrian deaths due to driver error. 33% is still a large number worth addressing.