I think he has done 2 bad things here.
Shot an elephant. I dont buy the trampling our crops argument, that sounds like a ruse to justify the act, and the locals will do anything for money because they are so poor, and that leads to the second point, they are soo poor because of Mugabe.
The CEO might as well boast that he shot an endangered animal and handed a nice fat cheque to a dictator. I know there is a power sharing government at the moment, but dont suppose Zimbabwe is a democracy, and Mugabe will hold free and fair elections next time.
A lot of the money he spent on his trip will have gone to Mugabee and his Zanu goons. If they are worried about their crops then they shouldn't have illegally thrown all the white farmers out, and the black workers who had very nice jobs with them.
Zimbabwe was once the bread basket of Afica, and one of its most prosperous and developed nations. Now its not a bread basket, but a basket case. You could argue that the white farmers had too much land, but evicting them without compensation and replacing them with safe supporters who know nothing about farming and everything about intimidation, rape and killing - is not a good agricultural policy.
So he's sent some more money to Zanu PF, even if he didn't intend that, and killed a beautiful animal. The locals will have butchered it - after all, they are starving under Mugabe's disastrous policies, which he blames on the British and Americans.
What's his next trick, go to Tripoli, shake hands with Gaddafi and then go into the dessert to shoot a camel?