The guy shot a lion with a bow for his own ego. There was no other reason to kill that wonderful animal.
As a rule, the fees from trophy hunting tags in Africa support a lot of wildlife programs.
When run on the up and up animals are selected by specialists to improve the herd.
The Safari Guides know which animals have been selected and guide the paying hunter to them.
That does not appear to be the case in this incident but I do not condemn all trophy hunting for it.