Which to me is a very carefully orchestrated thing. You don't just spend 2 years of your life doing that. No loner would pre-plan this to such an extent and create sockpuppet accounts for all this.
That's because you're a normal, well adjusted person.
Consider TempleOS[1] which was created by a programmer having a series of manic episodes which he believed was God's instruction to create 640x480 pixels of perfection.
He spent the rest of his life on this.
People vastly underestimate the tenacity of individual fixated people: so much so that in the physical world victims usually feel isolated by their peers who just don't believe the degree of effort they stalker will actually go to.
TempleOS feels a little different because Terry was fairly well-known in the community and didn't try to hide his identity. I'm pretty sure he went to conferences and has met with actual people who could verify his identity.
I haven't seen proof that Jia Tan is a real person and to me that's the most malicious part of the attack. I'm pretty confident that whoever is hiding behind the Jia Tan identity is a well adjusted individual (or group) and knows exactly what they're doing. It feels far too coordinated and careful to chalk up to a psychotic episode or manic behavior.
