Wrong. While not designed to be lethal, a number of people have died after being tasered.
i am reasonably certain that several people have choked to death from eating ham sandwiches.
question for you: is a ham sandwich a lethal weapon?
ham sandwiches are not designed to be lethal. however, your esteemed reasoning implies that ham sandwiches should be classified as lethal weapons because people have died choking from ingesting ham sandwiches.
are you, or have you ever been, in LE?