Apparently you also didn't read the article to the end where the author says: "Critics of the dollar are having a field day. But when I think about our current monetary arrangements, I am inclined to paraphrase Winston Churchill on democracy: Ours is the worst possible system, except for all the others."

Thus I would read the OPINION piece as a discussion of how one could have a US without a Dollar, NOT a piece espousing this as the way to go.