I suppose the major reason would be that his popularity is indirectly proportional to his contribution/talent/hard-work for the industry. Also the haters hate his music. Plus he hasn't heard of Germany (the accuracy of this fact remains a mystery but if true...wow)..just wow!
He just has a niche fanbase and it turns out that its a very, very vocal fanbase.
He just has a niche fanbase and it turns out that its a very, very vocal fanbase.