I liked this "mixed genre" book quite more than I expected. If you think about it, we encounter theory in context of our lives ("Ah, that's right, I read that in my sophomore philosophy class when I was living with a schizophrenic roommate..."), so why not talk about our lives and theory as they influence each other?
I'm not sure I share Villanueva's vitriol toward Hirshe (or heavy, depressing worldview, generally), but I really respect him as a rhetorician, and a lot of what he expresses about being a minority in the academy struck me as open and sincere.
It strikes a chord with a very dissatisfying lecture I heard. When Sharon Crowley (one of his mentors) keynoted at RSA about racism that "other people" have, everyone applauded. They asked questions about how to combat racism in their students, their state governments, even their administrators, but when I looked around the audience, I could only count three or four "rhetoricians of color" in my view. How is this only someone else's problem? Why do we think we're so far evolved from it? I'm sorry Crowley missed the opportunity to call us out and further support Villanueva and those like him instead of making us feel even more self-satisfied.