I like your idea in general, of blaming the person who actually killed the deceased. But I don't see how that would help in this situation.
Besides, what would you do in situations where there was no clear 'smoking gun'? Let's say a child dies of anaphylatic shock after eating a cookie that had accidentally touched peanut products on the counter, and that the guy who made his PB&J sandwich hadn't know there was a kid running around with peanut allergies. Who do you shame and despise in that situation? "If X had only cleanup the counter Y would be alive today!"
Besides, what would you do in situations where there was no clear 'smoking gun'? Let's say a child dies of anaphylatic shock after eating a cookie that had accidentally touched peanut products on the counter, and that the guy who made his PB&J sandwich hadn't know there was a kid running around with peanut allergies. Who do you shame and despise in that situation? "If X had only cleanup the counter Y would be alive today!"
It must be nice for the world to be so binary.