We've been in a post-pomo world since 9/11: see http://www.bruno-latour.fr/sites/default/files/89-CRITICAL-I... if you doubt this. What's odd is someone dusting off the irony-is-killing-us essay template again after a decade of stridency and self-assurance.
That's an interesting piece. You can see how some lines of thought have become verboten in respectable society. This era might be considered the Rise of Fear and the Return of Authority.