This idea that crashed cars or small planes explode in a ball of fire is from Hollywood. When a car or small plane crashes it just crumbles into hunks of metal debris. It has no relationship to the concept of fire starting.

Every action done here is completely orthogonal to fire risk and completely independent of the fire risk of the region.

Under your logic Making an illegal campfire is much much more of a crime here. And this logic makes more sense to me.