@Andromeda made a good point to me on this topic recently. What about different types of people and purported OPs? Is it possible (likely even) that a lot of this kind of literature on "how to attract women" is using 'OP' women as a reference? Women who are largely content to be seen as 'giggling feminine girls' by men, and little more.
In that case, where does that leave women who are and want, let's say, more than that?
Also, does this kind of literature not run the risk of encouraging narcissism in men that read it, where the are encouraged to view ALL women from that oversimplified perspective, and that the "most natural" way for a woman to be is a kind of "little lady" constantly fawning over her big burly caricature of a manly husband?
And if and when, later in a relationship, these men find out that their girlfriends or wives are not content with that framing of the relationship, and rebel against it in their "evil wily womanly ways", the men get all upset and claim that their girlfriends/wives have been "mind programmed by feminism".
From this perspective, it's more understandable why Sandra Brown labeled the first post as being "sexist". I suppose what she MIGHT have meant by that is that it fails to take into consideration the differences and nuances and complexities of women, in favor of an over-simplified, arrogant and obtuse analysis (however true in certain situations for some women).