If you do your chins with rings instead of a straight bar, they don't hurt your elbows.
I've never had access to rings, but chins and dips do look like they could be a bit ninja on them. I've always fancied seeing whether or not if I could do a muscleup on them.
Ah, yes that vid. You failed to mention that he had a torn tricep and he had to do burpees as well. You also failed to mention he was doing a full training rep for him. Which means his mind was accustomed to the variation that puts more stress on the lats. Full reps or perfect form sometimes mean shit, look at Ronnie Coleman or Bertil Fox (who was famous for bad form). Now imagine them in their prime and you walking up to them and chastising them for their "lack of full reps"
If we really want to question full reps, look at Phil Heath's first vid, he is training legs and it seems he is doing quarter reps on the leg press...now I can see someone WTFing on that.
Hahaha, Couldn't do a chin up because he had done some burpees!
He's gonna be fucked when the zombie armageddon happens.