I dont know? I dont even care. Its just an exercise I do almost every week and someone didnt believe me so I posted it. Bad form, not hitting the right muscle, and fake weights are just excuses as to why I can do it and you cant.
It is bad form but you CANNOT do that with good form (unless you can prove otherwise).
My triceps are wrecked from doing it as they are every week so how is it not effective?
The bar is most certainly 45lbs. Never seen a 7 foot bar that isnt unless its a hollow axle.
This exercise has helped me immensely with my overhead pressing. <<<that is all that matters.
Seriously though, please give them a try and prove me wrong. 
the point is that YOU CAN'T DO IT EITHER and that is proven by the video, all this bullshit like "i'm too big and not flexible to get my elbows closer" is an excuse, your arms are simply not strong enough to do that exercise with that much weight, you'd be using a 35 pound plate on each side MAXIMUM if you kept your elbows stationary and dropped the bar to the bottom of your head like you're supposed to.
