Dying from a crash doesn't mean you don't put pressure on social services. You could die at the scene (first responders and paramedics still), on the way to the hospital, upon arrival, or hours or even days after.

This does nothing to alleviate those pressures and the number of organs that are useful for transplant after a violent crash (that kills the occupant!) is basically zero.

It’s mostly head trauma is both cases, the kidneys should be fine