It would more humane to grow whale blubber in a lab. Even if you don't care about the suffering of whales who are absolutely miserable in confinement, there's

It would more humane to grow whale blubber in a lab. Even if you don't care about the suffering of whales who are absolutely miserable in confinement, there's no way to make farming such large animals economical. It's why you can't farm bluefin tuna, it just takes too much food and space compared to what you get.