Correction. You posted this: "Also, for criminal negligence to apply you would have to say every cowboy who has fired a gun in a Western would be guilty of the same - because they too would have trusted it was only a prop when told so - as Baldwin did."
That is idiotic logic. As I pointed out to you, Baldwin shot someone and the "countless actors in Westerns" did not. You can't be criminally negligent for a crime, not matter how insane or reckless your behavior, if there is no recognized harm that occurred to begin with. You somehow fail to grasp that or you just decided to back away from your statement (acquiescence).
I even gave you an easy reckless driving example I hoped would shed light on how dumb your statement was, but you didn't get.
And you still don't have a clue one way or the other whether none, some or all other actors check their guns before firing or not, or whether none, some or all other actors check to make sure they aren't aiming at someone before pulling a trigger. You don't have the slightest idea about what other actors have done when using a gun on a movie set. You just presume that actors don't check their guns for purposes of arguing that Baldwin had no absolutely reason to check his gun. That is a fallacy of presumption, amongst other logical flaws.