When someone says “I’m going to kill you” it’s best to believe them. It’s not a good idea to hope that they don’t.
If that were true I would have had to kill a lot of men.
But previously the cop was told the suspect possibly wanted the cops to kill him. Suicide by cop. The suspect also repeatedly told the cop to shoot him. The cop told the suspect, who never did produce a weapon, he didn’t want to shoot him but would. He held off, and apparently the suspect had no gun on him.
You can’t change the outcome.