Knee jerk or not, it is correct. Nobody can argue the (theoretical and extreme) fact, that if there zero guns, there would be zero gun deaths. Just work back from there.
BTW, I don't understand your pot/kettle reference. I didn't call or accuse anyone of anything such that I am being hypocritical. I stated that having to find all the reasons before we can do anything a red herring or maybe better, a rabbit hole. There are sooo many different reasons that gun deaths occur, that nothing would ever be done. And that is exactly what has happened, and continues to happen, in the US.