The article said the allergy is rare and I suspect that's true. On the other hand, a lot of people have an adverse skin reaction to touching something -- the docs call it "contact dermatitis"; red, itchy, puffy -- and they just take note and move on without a fuss. If any have ever found their wristwatch irritating after a while, that's usually why.
A big stink is being made over this, I think, because of the children.