M8, if you had the reading comprehension of a kindergartener you'd know what I'm referring to, because I literally said it in plaintext.

Anyway, your first "source" is a literal propaganda channel, the second is just a guy's rambling video that doesn't cite sources, but not to worry, the legwork can be done easily to both determine what is factual in the second link, or at least likely factual, and what isn't. What is likely factual, is that if there is cellulase anywhere in the human digestive system, it's in the mouth, which would encourage chewing on leaves to suppress appetite or boredom, which is something we humans do. It is not in the gut, however, and instead cellulose is one of the indigestible carbohydrates we humans only use as fiber and not as a damn thing else. Eating plants as a source of fiber to aid the digestive tract is also something carnivores and omnivores do. Some even constipate themselves with this fiber to hibernate, and there's a carnivorous bear in asia that through human intervention and its own laziness for hunting, currently subsists on what little nutrition it can squeeze out of a plant that used to be just its fiber source.

Regardless, as your sources contained propaganda to begin with, you're not worth anyone's time, as it shows (as if you didn't show already in this thread) you're willing to be dishonest to make your nonexistent point.