No, he's not e-illiterate. Nor is he ashamed. Nope. He's a coward. Go look; you'll find that he has a full blog presence but he refuses to allow comments AND he refuses to share any direct email contact point.
IOW, he feels secure in making these sweeping condemnations because he doesn't have to listen to the feedback from anyone who disagrees. That makes him a coward. People need to start appearing at his book signings and panel discussions with signs that read "Nick Hornby is a Coward."