As someone's who has been to India, in the video it seems to be working. The monkeys don't like to stay away like regular animals, if you've got food they'll come close and even attack to get it. They won't go very far away, but if you can keep them from being aggressive towards humans it's better than nothing.
As someone who is staunchly opposed to the overuse of the "also his balls are huge" tag, I also wholeheartedly support affixing it to this video. Not only did the monkey have a huge pair of testicles, but it seemed like they may have put something in that guy's shorts to replicate a huge pair of testicles, although I'm not sure about that one.
India has this problem with monkeys, alright? The first solution to the problem was, believe it or not, to bring in bigger monkeys than the original scoundrels. When this proved a disastrous, and hilarious, backfire, we get this.