The better book review publications typically employ a subject matter expert to review a particular book. For example, a historian who specializes in the colonial era may review a book on George Washington. Somehow this reviewer was assigned to review a fairly specific subject, yet has no obvious expertise in the era or in the related background motivations of the characters. Yes, the movie expects much from the audience in the sense that to fully grasp the underlying context there needs to be a preexisting knowledge base.
From conversations with folks who have read a bit about the era prior to watching the movie, much of this review is simply an off - the - mark gathering of misguided style points. As for the movie, it is on point.