Nature park is still basically a zoo, and yes the lesser evil is the sacrifice of animal wellbeing to ensure that the masses of urbanized humans get to physically see these animals. It is an inevitable tradeoff and there is no way around it, no euphemism for zoos or general appeals about animal wellbeing can paper over that.

If the benefit of putting wild animals in small zoos is some sliver of human cultural contact with the wilds, then that calculus is worth it, however paradoxical and politically incorrect it may appear to be. That's the argument.