Answer:
The author's use of irony emphasizes that men's desire to be superior is not an obscure or particularly interesting fact.
Step-by-step explanation:
The rhetorical technique known as irony refers to using words that express something other, and especially, the opposite of the literal meaning.
In this excerpt from A Room of One's Own, by Virginia Woolf, the author uses irony to emphasize that men's desire to be superior is not an obscure or particularly interesting fact, by ironically claiming that the "very interesting and obscure masculine complex" has had "so much influence upon the woman's movement." Of course, what she means is that the masculine complex is not interesting nor obscure.