Artist/author here! To be clear, when I said her body is like a whip cracking, it's because a kung fu artist doing that kind of movement in real life would look like a whip cracking. When I said arms don't work that way, I mean that his anatomy is literally deformed to the point of not even looking human.

I am not using a double standard. Though, even if both figures were deformed beyond what is absolutely realistic, there could still be well-executed and poorly-executed iterations.