Good question. Maybe not, maybe actually yes. Using animals for transplants gives place for all kind of discussions. But this pig only existed as it was raised for that purpose. Like basically all pigs, which are raised for meat production. In contrast to those, the pig in question was probably well raised in good conditions and fed quality food and no bad pharmaceuticals. And indeed, humans use many animals, a lot of that use involves their deaths. But here it at least isn't for some random food, and a lot of meat just goes waste, but to keep a human alive. That is at least a very good reason.