I am unhinged? Hmmmm, possibly! Probably??? On the other hand I am not out beating the crap out of my house with a 5 iron!
You might want to consider adding some narration to your video, it would make it easier for the great silent unhinged majority to understand what it is that you are demoing!
BTW there are some very good reasons to use an 'arm swing'! LOL, that is my attempt at a 'Peter' statement, what do you think?