Sorry for not replying (I had noprocrast on!)..I think he's not only exploiting empathy (for power and justification), but is also using the article to bolster himself and make himself fantastic, when the characteristics he assigns to himself actually have no basis in reality. This is textbook psychopath behaviour.
As a "reformed" psychopath, the article is all about him, his abilities and how he should be treated. Further, he claims that he sees "weakness", as if everyone he has or could have manipulated and screwed over was "weak" (instead of being someone who trusted him, which could theoretically be the same, but in practice most people would consider different), and he has just learned to control himself and not exercise his superior strength.
In reality, a psychopath is indirect, delusional and self-centred, and they will lie, subvert, cheat, steal and abuse to get their way, but rarely ever seek out true weakness in themselves (unless you count covering emotional vulnerabilities artificially) or make a stand for anything. For being a "strong" person obsessed with finding "weakness", you can pop the bubble of a psychopath simply by showing his network of followers and clingers exactly what he is...psychopaths are a strange mix of selfishness and deluding and changing themselves to fit in. They preach to others, put others down and castigate the flaws in others, but the second you put irrefutable evidence of the psychopath's incompetence, weakness or maliciousness in the open, in a way that everyone believes, he will have a meltdown and flip out. It's kind of like people who hang out on Internet forums, rise to the top of the ranks by spewing mindless platitudes and bullshit, who pretend to be rational while criticizing others mercilessly, and then when someone outs them as incompetent, malicious or even maybe just wrong, they throw a big fit and implode.
Finally, he talks about how his psychopathy gives him superior "strategic" abilities, but in reality, psychopathy actually limits long-term thinking and planning. They actually tend to be very impulsive, and one of the key tenets of psychopathy is a short-term, parasitic lifestyle.
He used the piece as a selfish exercise to bolster himself, paint his actual or potential victims as weak, and did it all with absolutely nothing based on reality, hence, I do not believe his is sincere.