He's reviewing Ender's Game; he has evaluated its message and merits on its own. It'd be better to disagree with his opinions than to complain he doesn't cover material he hasn't set out to review.

Anyway, why would you expect the reviewer to read the sequels if he so dislikes Ender's Game?

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.