That's an absolutely valid point. The reason I went ahead and posted my comment anyway was because it's the most obvious example of how the reviewer and I interpreted the book differently. Granted, I read it years ago, and the goal was entertainment rather than literary criticism, but I saw plenty of guilt: it all simply landed on Ender's shoulders when he finds out what he had done, and fit in with the guilt for his previous acts. I think it's possible to read Ender's Game with either interpretation in mind (guilt vs. no guilt), but my interpretation seems to be more supported by the sequels.