just that Alec should be held responsible for his role
Which is fine, but you’ve misattributed what the part he played that makes him guilty is. Had it been any other actor they’d not be guilty, as has already been explained actors cannot reasonably be expected to know they’ve been handed an unsafe weapon by the armorer.
Baldwin was a producer and directly involved in the hiring process of those on the crew. He hired an incompetent armorer AS WELL as misbehaved on set as a producer leading to an unsafe work environment. Baldwin is guilty no matter who pulled that trigger.