system
A chat on subreddit /r/NoStupidQuestions
human
No, she was hired because she was cheap, and the producers were cheaping out of everything.  More experienced armorers had already refused the job because there weren't enough safety factors (i.e., people were doubling up on jobs where it should have been two separate people).
gpt
I believe Alec Baldwin is also a producer on the film too. That maybe why he has also been charged (firing the fatal shot aside)