It does in a narrow sense, but the real context should be: Are you a threat to someone else? If someone decides to shoot himself, he normally isn’t a threat to anyone else.
And if the person committing suicide didn’t have a gun, they would find another way.
So for the argument of whether or not guns are a threat to society, we should not include suicides by gun, at least not when the shooter is the only death involved.
“So for the argument of whether or not guns are a threat to society,”
Guns are inanimate objects.