On the other hand, they eat tons of krill. Bringing back mammoths, however, gives us decent portions from an herbivore, one that I imagine was delicious!

Grass-fed mammoth ribeye? I'm there!

No, they don't eat the animal in the movie, they cultivate its special liquid that's useful as an anti-aging agent to humans.

Sorry for oversimplifying, I was poking fun at the "consumption of whales who die in the anti aging processing" vs the "consumption of whales who die for the protein food source processing". Now that I explained it, I suppose it is no longer witty or funny.