It's interesting because I can entirely see where you're coming from because Debord really does have those tendancies in his writing, but if you consider his background with the Lettrist movement and all of the avant garde artistic techqniues that they were experimenting with in the 50s (Check out some films by Isidore Isou) then you can see his later obscurantism as a development of those techniques and as an attempt to imbue those techniques with the same philisophical and political impact as his core message.

The book is really very tightly packed with ideas, working as it does.