It's basically saying that if Christians didn't exist, all problems in the world would disappear.
Well, to an extent, if the population was dramatically reduced, the outcome would be overwhelmingly beneficial. I'm not advocating genocide or anything here, but, historically speaking, humanity flourishes the most when there are less people around. It's common sense. More resources, with still enough folks to sustain mankind and regulate them. The world is much bigger that way, with much less commotion, and much more elbow room.
And though there is something to be said for not bashing other people, at the same time, this video is really the tip of the iceberg. Relatively speaking, it could have been much more overtly "anti-theistic" than it was, if you can even call it that. It was clever in its own way, and was really made just to point out the ridiculousness of the minority that followed Mister Camping, but which unfortunately resulted generalization. 'Twas a joke, though, and getting worked up over it is rather futile.
It was also deeply mistaken. The Vatican is already used for laser tag. You just have to know the right people. ;D
