You miss the point entirely. Baldwin was not “filming” when the incident took place. It was, as you say, in between takes, and Baldwin was goofing around with a gun.
Yeah, but goofing around with a gun that should have been checked/cleared by the armourer. That same gun during the filming of a scene would have killed an actor instead of the cinematographer. Don’t trust the goofy actor to to do a weapon check/be weapon competent...he has pointed & pulled the trigger on prop weapons 100’s of times during film shoots...he is going to “assume blanks” 100% of the time.