I don't mean to dismiss your experience, but this is such a super-tunnel vision point of view there's nothing here to gain. Your sample-size is one person, and for some reason you bring up gun control laws, which changes the course of discussion.

Of course many people with depression don't just die of being depressed. That's not what this article is describing.

Depression isn't severe trauma. Severe trauma can cause depression, and what's explained here, is that it can cause death by psychosomatic cause.