There’s a bit of a difference between a fiction book and a 3000+ word ad for consulting services[0] that could reasonably be considered a how-to guide until it reveals its lack of repeatability in its final sentences.
I’m going to guess that if “You cannot replicate this” were at the top of the ad fewer people would spend their time reading through it.
> There’s a bit of a difference between a fiction book and a 3000+ word ad for consulting services[0]
Not in the context of the post. Regardless of what it is, it's not required to be "useful". Just enjoying the content, for whatever reason, whatever its intent, has a "use" to some.