Summing up your wife's experience with the one in the article, perhaps what employers like the least is the ambiguity of getting a CV where they don't know if the applicant is male or female?

I do know I have felt somewhat embarrassed when I had to reply an email to people with a gender-neutral name. Although maybe that's because there are no such names in my country, so I find the situation odder than most people. But I can picture a HR person wondering about the gender of the applicant and just skipping to the next CV to avoid the uncomfortable moment, especially if there are many similar CVs to choose from.