I do agree with that, but you can’t say there wasn’t awareness on his side.
While I follow some of your argument I cannot entirely absolve the self in matters of addiction. It is a medical condition, but I wouldn’t call alcoholics who drive under the influence and kill a person not responsible for their actions., therefore drowning in a drug induced stupor has a function of responsibility in it.
I can see how that makes coping easier. And follow your agreement for a bit.
The grasmower argument doesn’t gel with me, though. I can’t release human agency that easily. I mean one doesn’t have to anthropomorphize a human being, as they are -well- a human being.
But on the ethical side of this much debate is possible. It hangs on the free will/ determination side of debate, not really one end all answer.