using that sliding box style, the dough needs to be much thinner than shown in the video (and my recipe) - the shown dough is much too thick/elastic/plastic to simply drip thru the holes in the slider plate - and there's not really a good way to apply pressure to the dough in the box to 'force' it through the holes whilst slip-sliding away . . .
having lived in both Baden-Wuerttemberg and 'lower' Bavaria, not quite entirely sure I agree with some of his opinions and statements about where which type is found/popular . . . but whatever.