Agreed. ETA: It might also have been more like what another poster said, they only meant to make the person ill, not kill them. (Though what the boy used on his siblings isn't named either.) I can see it either way. Either he was just trying to pull a mean spirited prank, or it was more sinister. In any case, blaming the victims isn't helpful at all. The child needs counseling.
The method I read about was pretty new, and it did say that it didn't have much of a success rate. The theory behind the program you mentioned does sound very similar. My heart goes out to you, also, I can't imagine the pain you must have daily.
Johnson said investigators also are looking into an April 15th incident in which the boy confessed to poisoning his siblings with an industrial strength cleaner and degreaser. The three siblings, a 15-and-two 11-year-olds, were treated and released.