Well, that judge probably had several million dollars cash delivered to his home in a briefcase, but that certainly does seem like prosecutorial misconduct, and an actor with very well known anti gun views cannot be reasonably expected to ascertain that a gun he is handed by the armorer on a set is not, indeed, "cold." After all, the prop ammunition looks almost the same as live rounds.
I believe he lied about not touching the trigger, as the gun was tested extensively, then later detail stripped to look for potential flaws, and it seemed to function correctly, but that seems irrelevant. This is 90% on the armorer. Baldwin's culpability is mostly in cutting too many production costs resulting in an unsafe set.

