I defer to your superior knowledge, Jasong. But surely you'd grant that, those special circumstances aside, filming straightforward scat shenanigans between two consenting (well, maybe) adults would be a hell of a lot cheaper than going through the folderol to make peanut butter look and behave like real poop.
Note: I read that whole Emily Gould article. And then rewatched the CNN clip. Guess I felt masochistic this morning.