You misunderstood. The point is, an animal will always attempt to keep living regardless of how painful or hopeless the situation. It's a basic instinct.
Well that's what we've perfected in animal farming isn't it. Cows, pigs, chicken injected with vaccines, given food and hormones that makes them live long enough to produce offspring and maximum human consumable resources. Their emotional and psychological needs are the least of our concerns.
I am with "letting wild animals be wild". If an animal can be patched up and let back into the wild after a couple of week, great. I hate aquariums and zoos for this reason. Its the human equivalent of https://popularresistance.org/deep-racism-the-forgotten-hist...
I would rather prefer reserves. e.g Nairobi national park, serengeti, mara. Really large spaces where animals can remain wild but conservation programs can still take place.
Vancouver aquarium in its Vancouver's ridiculously priced real estate doesn't have enough space to host big intelligent animals.