I think you have an over romanticized idea of what real stunts are.While I've not seen the film, I remain cautiously pessimistic about it, and the claims about "all real stunts." Exhibit A. Clearly the guy jumping from the truck to the car is NOT a real stunt, in that he didn't actually do that. So, that's a half-truth or lie. My guess is that was done on a green screen and inserted. Or there were other safety wires and harnesses, slower speed, etc. Again, cheating. Not a stunt, as they are intended.
Even in the Road Warrior there is plenty of "fake stunts", watch the behind the scenes video on Youtube, there is plenty of hidden ramps so the cars can jump over guard rails of to roll over. Or all the car board boxes for the stunt riders to safely land on or the obvious dummy in the back of the Charger that jumps the wall into the compound.
Or most of the close up shots of the truck in the final chase that were shot with the truck stationary with fans to give the illusion of movement.
https://www.youtube.com/watch?v=L_XtkfoCLPw
And that was 30 years ago, no major studio would ever allow your idea of real stunts on a set.