I will hazard a guess that actually some people he went up to in the street were Christians -- but they didn't make it into the actual programme. Sure, Sweden isn't very religious. But if the figures in Wikipedia are to be believed, about 18% of Swedish citizens believe in a god, whereas somewhere between 1% and 5% are Muslims (and I bet the Kopimists are way, way, way under 1%; I bet the Kopimist wasn't encountered in random vox-pop interviews).