Perhaps he is referring to the entire thing. The story-telling format might be considered dark arts, in that it appeals to your emotions rather than making rational argument.
Other than that it is remarkably neutral (and thus unlikely to be dark-arts-ish), the only violations that I see are “Better dead than Red” and the mention of a spouse and children.
I’m not authoritative, but I suspect the meaning is “changing the method by which you implement your values”, testing your instrumental rationality, kind of thing.