Helge Schneider does not like the finished product.
Before I start, I have not seen the movie, yet. I wanted to see it, but did not because Helge Schneider said shortly after he saw the finished product himself, that this was neiter the movie he expected it to be, nor did he like it very much.
"Dass der Film so anders wird, hätte ich nicht gedacht. Der Fokus war ursprünglich auf Hitler. Jetzt ist er mit aller Gewalt auf der jüdischen Geschichte. Es geht nur noch darum, wie Hitler gesehen werden soll: nämlich als Schwächling. Das ist mir zu profan. Hätte ich das gewusst, hätte ich vielleicht gar nicht mitgespielt.“
"I did not think that the movie would end up being that differnt. The orignal focus was on Hitler himself. Now it is forced upon the Jewish story. All it is about now is, how Hitler should be seen: namely as a weakling. That is too dull for me. If I had known, I might have never done it."
I think the production company was a bit afraid of making a movie of this kind. But since Dani Levy, a jew, wrote and directed, they probably thought nothing could happen to them in terms of political correctness and stuff. Of course he was given all the final descicions and the final cut.
And what did he do with all his liberties? I don`t know. I have not seen it. But why did he do it?