Maybe because it’s plausible, maybe because of the senslessness of it. People are naturally curious/nosey. They also want to understand what drove this. Even if some of the rumours were true, nothing justifies what the end result was. . There had to be some connection otherwise why would a seemingly normal teenager wait outside a house for the opportunity to snatch a child. Why that child? it would seem if there were no connection what would lead him, Other than drugs, to their home ? I do think it was opportunist personally, but you don’t get to this behaviour from nowhere and I think that’s what most people are curious of. I doubt he’ll be telling the truth any time soon.