I share this sentiment. F1, NASCAR and Indy Cars all possess this level of performance or greater and the drivers will almost always walk away from a shunt like this. If you build a 600 hp car that can go 200 mph, I think it should be crash rated at those speeds. The NSX is, for example. H-frame with steel beams in the door structure. Plenty of shockingly mangled NSX wrecks on the salvage thread where the drivers walked away.
Plant trees, install phone poles and other stationary solid non deflective items on the sides of the track surface and almost every race car accident making contact with such would result in a casualty. The streets are not for racing well at least not until properly angled walls are installed that deflect and shed speed with the car at a proper angle.
I could make an almost endless list of race car drivers which have been killed from hitting the wall at the track at just the correct angle which causes rapid deceleration and death. This is true of any type of race car. A driver can flip a car multiple times, slide it down a wall from one corner to the next and pretty much walk away because of slow deceleration.
Blow a tire coming out of a corner, head up the track straight for the corner fail to turn and you're dead. Hit the end of the pit wall, you're dead. In fact just a few years back in think 07 Ben Keaton from the Ferrari club was killed in his CGT hitting a stationary cement reinforcement. My personal view is that the track where Keaton perished is dangerous in and of itself as the cars exiting the pits come right into the race line. Even so Keaton was killed and as well his passenger. They were only going ~145mph. There have been multiple deaths in the CGT. The CGT isn't called the widow maker for effect, its a very dangerous car and IMO should never have been sold to the general public. Or maybe Porsche should have included training in the sales agreement?
With that being said, I have watched the video of the walker wreck and observed it while zooming in closely to the flames. Being that there are no reports of any bystanders being hurt I have to sadly said that someone in walkers CGT was fully conscious after the wreck and was desperately trying to exit the car. To me its pretty clear a figure in the center of the flames doing what appears to be yanking at the seat belt maybe and trying to escape then finally dropping back into the fire. The only other explanation I can come up with would be someone on the other side of the car, the side which wasn't be videoed trying to extinguish the flames then setting the empty canister down on the ground. However putting out a couple car fires myself I know beyond the shadow of a doubt the person doing so would have serious burns and I'm sure that would also be in the news.
Edit. After going to the liveleak link in this thread its petty obvious someone, the body walker according to liveleak, was standing at some point after the crash just form looking at the positioning of the body laying within the wreckage.
This is why I had installed on my Ferrari and boat a fire suppressant system and why I would recommend to at least have a fire extinguisher in your vehicle if you don't have one already. I have witnessed two people burn to death before my eyes and it never leaves your mind.