Welcome to New York City.
The customer complied.
He gave up his money, he didn’t resist, he still got shot in the face.
The people who say, “just give the criminal your wallet, don’t fight back,” do not understand that such compliance isn’t a guarantee the guy willing to shoot you for your wallet won’t shoot you after you handed over your wallet.
I don’t know what I would have done in this situation, but I do know that expecting mercy from a guy pointing a gun at you during a robbery is a bad bet.