Guess you don’t understand guns, or the proper handling of them.
The person holding the gun is responsible for any damage that might be caused by firing it. It’s that simple.
It is not "that simple".
We have 100 years of "action movies" in which actors point firearms at other people and pretend to shoot them. It is an inherently dangerous activity, and the film industry has developed elaborate safety rules to prevent injuries or deaths during this activity. Those rules work - when they are followed.
They weren't followed on the set of Rust. There was a long chain of failures by multiple people that lead to a fatal outcome.
The "79 rules" of "Industry Safety Bulletin #1" have a much better record than the "4 Rules of Gun Safety".
In that context, Baldwin was third in line for at-fault behavior, well behind the gross negligence of the Assistant Director and the Armorer.
Whether New Mexico law will consider any of that is an open question. That is what expensive defense lawyers are for.
No it is not that simple.
Movies, use of force and force on force classes.
All have safety prodigals that do not have the person using the gun. Checking it.
The safety personnel do not want a person screwing around with a weapon they have declared safe.
If you let the person using it screw with it. You are introducing another factor that you do not have control of as a safety person.
If the safety prodigals were not followed it is not the end users responsibility.