For that situation, would a stunt man or stunt woman have avoided the injury any better? if it is not some difficult executions or stunts but rather a poor planning of pyrotechnic, a stunt man might be like any other layman in that situation.
That boils down to the next question, is the safety of stunt man or stunt woman less important? are they "dispensable" or worthless?
Should that be a view that it is more ok for a stunt man/woman to get hurt rather than a big star?
I would say, if big star get hurt, not so bad, they are rich.. probably it'll last them a long long while w/o having to work. For a stunt man, it might cost him his ability to earn a salary and might be in financial difficulty. His whole family might be affected. The star may loss her looks (or maybe not, they got $$$$ for big time cosmetic surgery), the stuntman family may have nothing to eat. The big star get hurt is lesser evil, maybe.