You misunderstood.No, the claim made by vern_humphrey was than Japan’s high suicide rate proves that guns are not a factor.
I read the point being that guns are not a factor in a successful suicide.
You posited-
The counter, correctly, is showing that presence of a firearm has nothing to do with a successful suicide.But most people who attempt suicide do not die—unless they use a gun.
Japan, with it’s high suicide rate and low presence of firearms, shows this.