Well, not exactly. The word "disingenuous" comes to mind. The author, rather than attacking the book as most fundamentalists have done (ie: heresy, lies, blasphemy,etc), attacks it as a 6th grade reader. To suggest he, as a practicing Catholic was oblivious to the whole controvery is absurd. Then to say he read the whole book, while hiding the cover simply adds to his credibility issues. His agenda was to label the book unworthy for any reader.
But the 44 million who did buy and read it may feel otherwise. If you look on Brown's website, he lists a few of the numerous reviews of his book. They are from professional reviewers and other well known mystery writers, all showering the book with praise.
It was to me what it was intended to be, a better than average thriller. Books such as these are designed for entertainment, not education. For those Christians who are offended, use it as a means to generate discussion about Christianity. For those Christians who were not offended, fine, but participate in the discussion with other Christians.
To each his own, to be sure. As a representative work in its genre, it may have merit. As to its literary merit, one of FR's favorite pundits, Mark Steyn, is singularly underwhelmed.