They’re getting confused because they don’t know what “carbon fiber” is vs “carbon fiber reinforced plastic/epoxy”. There were a few valiant souls at the end that tried to clear up the confusion. It certainly says something about gadget freaks that people will buy something and pay extra money for a feature and are unable to tell whether they actually have it or not, much less know what the feature is. Then their first instinct is a class action suit.
That said, I’d love to see Sony offer to give these guys a free exchange for a matrix-less carbon fiber cloth shell.