Do you really think that was his goal? Like one day he was sitting around, and then he suddenly thought, "What can I do to help save the black rhino?"
The hunt itself actually makes some sense. What I find a bit off-putting is the hunter's self-serving comments. It would have been better if he had kept his mouth shut, and let the park officials explain things.
Now, it would have been a different story had the hunter been contributing to a Save the Rhino fund for the last 20 years. But I doubt if he did.