I think he got another interpretation of your post.
I understand you were talking about working too much/hard but the expression you used phrased the way you did made it also sound like you were talking about suicide. That was what crossed my mind first, before getting what you actually meant to say.
We here use a lot this expression " i/you are killing myself/yourself working that Much"
Maibe you and him read my comment and got : "why would Sony CARE about japanese when they ONLY work until decide to kill themselfs" ?
Bah, not my intention at all. 🤷