I understand and under normal situations I’m right there with you. This isn’t a normal situation, it’s a movie set where nothing is normal. So I go back to my original thoughts on this. As the armorer, if I hand you a gun I have declared safe and you jack with it, I can no longer declare it safe and we end shooting until I can declare it safe.
Imagine if a scene called for a round of Russian Roulette? Do they just take the word of the prop person or whoever and pull the trigger? They are idiots if the do.
I was trained as an armorer at a factory on sever different platforms. One could assemble a pistol on the bench, right in front of an instructor, hand it to him, and he goes through the procedure of making it safe. Redundant. Every time it changed hands, and it didn’t matter what you had just done, same thing. Sit the pistol down....it’s “loaded”, repeat the procedure. This was done each and every single time.
There are no exceptions to the rules. But the Hollywood mentality is driven by a belief they are allowed exceptions to everything. In this case, the exception got someone killed.