Well, that last paragraph confuses the otherwise on-target thrust of the article.
It's true--there aren't that many modern Christmas classics-to-be. Quite a few of the wannabes do make me cringe. Harry Connick, Jr. comes to mind as someone who has more than a few solid contributions in this category, however.
But some of the most gifted and successful singers in general have/had troubled lives, and as the article admits, so many singers at some point do some Christmas songs...So there is nothing "intriguing" about that last attempt at a point.
Regardless, thanks for posting the article, vocal.