I responded to traffic collisions for over thirty years, first as an "advanced first-aid'er," later as an EMT1. The times I was forced to remove a victim from a wrecked vehicle myself I can count on the fingers of one hand. I have set/crawled into/laid in a wrecked vehicle for well over thirty minutes, providing aid and attempting to keep a victim stabilized many many times, waiting for the ambulance and fireguys to arrive to do the actual removal. A first responder just doesn't need to remove anyone most of the time...