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Who ever said it wasn't his hand? The point of the image is that once you see the weirdness, illusion or not, it's very hard to look at it the same way again.
Jeez, some people love to suck the fun out of everything.
Back on topic, I think Talen has got it spot on, it's a possible concern, but without playing the game you won't know for sure if it'll bother you. I've played it and it does bother me a little (not enough to stop me playing it though), but I'm well aware not everyone will feel the same way.