Point taken about the unlocking (provided the battery and wiring are not damaged by the crash and the doors actually do unlock). However, in anything more than a minor shunt, the doors don't open anyway due to deformation of the car frame. So, I agree (but for a different reason) that it is largely irrelevant.
Also, in any survivable crash a back or neck injury is far more likely than the car catching fire. Despite what is portrayed on (fictional) TV, cars do not often catch fire after an accident. Moving someone with a spinal injury, on the other hand, presents a very real risk of paralysing them.
I would certainly NOT want to be dragged from the car unless it was on fire (or at risk of falling over a cliff).
I was involved in a serious accident resulting in a neck injury (plus 9 broken bones in all four limbs). Had I been dragged from the car by an untrained 'rescuer', I would probably be a quadriplegic right now (if the pain of being moved hadn't killed me through shock). It took the Emergency Services no more than 30 minutes to get me out safely by removing the roof of the car.
Al