I understand that, but the wolves are living things that require expert care. This isn't some cat they can take home or some mouse they can quietly put down... They're stuck with them

If they kill them, they'd get death threats (people are already attached). If the wolves escape, they'd get protesters. People will likely come to try to see the wolves, the wolves will try to escape and become extra aggressive if they're understimulated

Good PR stunts don't require you to run a zoo for the next 14 years - and whether they allow guests or not, they'll need a team of people, including round the clock security, to take care of them

So unless they can sell them to someone, every success they have pushes them further into becoming Jurassic Park, but with less cool animals