Yea, we're such pristine, evolved frugivores.
Don't know about you, but that looks to me like a highly evolved skill (what balls growing supplement they're taking, I don't know). Note the ages of those men. Here's what I see after numerous viewings: an elder who has done this dozens of times and two young'ns, learning the ropes, to eventually be passed down.
I sent this video out to some friends & family and one of my brothers came back with the observation that humans are the apex predator. I thought that was an elegant integration given that nothing else was actually killed or harmed.
Hell, it might even give a vegan pause, since that animal was already brutally murdered and would have been consumed in whole anyway. Moreover, I also very much like the implied ethic of the thing -- they only took one rump roast, not the whole thing, leaving the rest for the lions as if to plant an evolutionary seed: fear us just enough. And why would they want to do any harm whatsoever to those furry gods, those wondrous, beautiful killing machines? They would want to protect them in oder to perpetuate this sort of symbiotic existence.
But the elephant in the room is: how in the world did this behavior evolve? How long might it have been going on? The African Savannah is the most ancient womb of life, development and evolution on the planet.