This is super-fascinating. I've always known that the game/animated film developers really do take the "whatever it takes as long as it's not in shot" approach very seriously. Rarely do we see what that means in practice.
EDIT: Btw, English may not be his native language, but this guy is incredible at exposition and constructing an entertaining narrative from a very technical subject.
That's an impressive breakdown. Thank you for sharing.
The fact that the left (as you look it it) wing moves from shoulder to tip and the right from tip to shoulder breaks it for me.