Yes, but I doubt he deliberately wanted to kill someone, even in the heat of the moment. He was not there, apparently. He is criminally negligent or some such.
Beware of how you wish to punish people. It will turn on you.
If you train an animal to attack, and then it attacks, then you did intend for it to do harm.
I read above the definition of 2nd degree murder, and it specifically uses the word ‘causes’. So, the law is saying that there is something beyond criminal negligence that isn’t you pulling the trigger, but does allow for you to be the ‘cause’.
What you say about criminal negligence I agree with. What the law tries to distinguish is not someone who ignored something they shouldn’t have ignored, but who also established a situation that would have reasonably led to the death of another person.