I will note that my kids were homeschooled and the bullying described in the article apparently revolved around this girl's real life social circle from school -- someone she went on an actual date with who spread rumors as a form of vengeance when she didn't put out. On homeschooling lists, there is fairly often discussion about how schools have a "lord of the flies" social dynamic. From my perspective, the incident in question is rooted in that issue, not in the internet per se.
I will also note that the photos in the article, which are described as re-creations of actual photos found online, all show what look to me like very upscale bedrooms that are a cluttered disaster. The settings suggest to me a home where the parents value material things overly much and try to "dote" on their kids by showering them with money and things in place of time and attention. I never had the kind of matching decor and such shown in the photos. But I did grow up with a garden out back, home-cooked meals, and parents helping me with my homework. And my bedroom never looked like the cluttered disaster depicted consistently throughout the photos. My room got cleaned and picked up.
My sons and I laugh at the idea of them being able to get away with some of the stunts we hear about or get into trouble without me knowing. First of all, I was there so much that I would have known what they were up to -- they couldn't have disappeared for hours on end without an explanation and no one noticing. And second of all, I didn't have rebellious teens because there was nothing to rebel against. I think that's an important detail.