The author of this article is terribly fascinated by this whole baby-beheading thing. I think he's pointing out the old, archaic and inefficient methods of killing babies employed by Hamas compared to the much more efficient strategies employed by the IDF to mangle babies and children in bulk via 2,000lb air-dropped bombs.
Unfortunately for Hamas, the US hasn't supplied them with any of those yet, so they must resort to the old barbaric method of doing it all by hand.