<<The dangers inherent in such an approach should be obvious, the threat to historical accuracy being but one. Happily, that is not the subject of this paper. It would be well, however, for historians and public both to be aware that certain sacrifices are made in the creation of such an epic narrative as Ken Burns' Civil War. It remains for other analysts and critics to decide whether the sacrifices are entirely worth the result.>>
As a Texan and a Southerner I have always believed that states rights was the primary cause of that particular conflict and that the slavery issue, moral tho' it was, was secondary to the constitutional right of self determination.
The paper you linked to also had the analysis posted above in the conclusion. Historical fact and the historical record indicate perspectives contrary to the conclusion you have drawn. Accuracy of historical records should be of more concern that the emotional moralizing attempting, by Burns' admission, to "resonate" with the viewing public.