Why don't they leave lion alone in the cage?

I was recently reading Telegraph newspaper and found something very silly. I do not understand what the purpose was to post this video. Though I appreciate that posted this video and we know how insensitive reporter telegraph has recruited. When the Lion are becoming extinct species then how come their reporter goes to disturb a lion living in a cage. Charles Starmer Smith entered the lion cage and he was attacked by the lion. If you see the video attached below you will find that the lion was very tolerate of his behavior but this reporter was adamant to get bites from the lion.

What he was trying to prove? When there is a big sign saying "stay away from the animals and do not touch them" then why he entered the cage. Of course the official in the sanctuary are also culprit why they allowed him in. But we know that corruption is widespread in poor developing countries. It is the responsibility of the educated and rich people not to exploit this weakness for their fun.

Telegraph newspaper is equally responsible to encourage reporters to do these adventure and pay them for these activities that encourages putting life in danger of the endangered species. The newspaper should make sure that its reporters do not exploit their status and money in future to any such activity.