I predict he's correct. Siri is a gimmick that was designed to give Apple something to brag about. Once available to the public only those who love to show of flaunted it to their admirers. It grabbed headlines as the novelty it is, and the less than tech savy people were highly amused. Now that Apples faces a serious challenge from Google Now, a highly useful tool, they've got their work cut out for them.
Leaving Siri out of the Cheap iPhone only makes that model more attractive to those of us that are not ready to give up on Apple. Instead we use the ever so wonderful Galaxy S4, a Nexus 4, HTC One, or some other highly useful and very enjoyable Android as our primary phones. Our iPhone is relegated to a secondary placeholder as we wait for Apple to do something relevant.