Rather affirm that this is exactly part of what you were saying [1]. I'll one-up you: indeed, the chance of a male writing such a book is much smaller than the chance of a female writing such a book. Acting as if gender wouldn't influence choice of content and style is ridiculous.
And before anyone jumps on my back: I'm telling it like it is, which implies nothing about how I think that it should be.
[1] Why would 'diversity' be a good thing, if not for the fact that it results in, you know, more diversity? Differences in the input result in differences in the output.