I hear ya. I wish we knew.
It goes back to what GP has said in the past. If you put it in the hands of the officials you're asking for trouble. Leave no doubt and it won't matter. The Saints had many opportunities to leave no doubt.
Similarly, I would guess that on literally every play, by the letter of the law, there is holding somewhere on the football field. As in someone gets their jersey grabbed, which is by definition holding. In fact, i would guess that the first thing many offensive lineman do is try and grab the d-lineman's jersey, so that's "holding". What's next after PI, replay reviews of those calls too?