Well, everyone is entitled to an opinion, or so they say. Yes, I am still inclined to let the Pope teach rather than this author though, because, not the pope.
What I have read carefully so far ( I have skimmed it, but going through it slowly now) I find quite insightful, well documented, and a contiuation of Church teaching. What more do you want? Still, if some think they would rather teach the pope than be taught, that is their business.