If you take that line out of context then I suppose it doesn't make sense. However, if you include the rest of the paragraph it does(which is why you don't isolate lines like that). It's the Final Fantasy: The Spirits Within syndrome. The more realistic they try to make it, the more people will scrutinize it since it isn't quite right; thus the "revulsion." It's a subconscious trick and one is more likely to have a more emotional response to something that isn't quite as creepy(more removed from reality).