If you ever t bone a car with a motorcycle you might live to think about the why's and wherefore's. It could have a significant effect on my statement if the dead could give an opinion.
I don't want to derail this discussion but motorbikes were mentioned and the biggest safety problem with motorbikes is how fast they travel.
One of the problems with push bike riding is the incentive to save speed because it requires effort to achieve. With motorbikes it's about self control when so much speed is on tap.
In the situation being discussed a motorbike rider would rather stop the bike before the obstacle than pass behind the pedestrian because it's a simple risk reward calculation that doesn't cost much physical effort.