A wheelchair cannot fit through this space. A person using crutches could not safely pass by. An elderly person should not have to walk across loose stones on a slope (slope not seen well in the photo) to get by a parked pickup truck. This is not even a particularly large truckbed. You may not use the sidewalk, but others do.

I very nearly “accidentally” banged myself/my watch on this truck as I walked by. Please think about how your actions, even actions as small as parking, can affect others.