Some kids just are demented; not all kids, just some.
It’s kinda like that old “trick” of burning ants under a magnifying glass in the hot sun? At the time it made you feel powerful, but as you get older you reflect and realize how fucked up it was?
It’s just that taken to the extreme (just a guess at least)
Agreed, might also gave the kid a sense of anonymity too…
Oh well, it caught up with him, hopefully he doesn’t re-offend