No, no, no and no.
ChatGPT wasn't the source of his desire to end his life, nor was it the means to do it. It was a "person" to talk to, since he had no such real people in his life.
Let's absolve everyone else of blame and hold ChatGPT solely responsible. Yeah, right.
Not his genes, upbringing, parents, peers, or school — it's just ChatGPT. Your own attempt at ending your life hasn't seemingly taught you anything.