Eh, feels like he’s playing up the stereotype of the eternal German.
"…WE DON’T DO ZIS IN GERMANY! YOU BUILD HOUSES WITH WOOD? WE DON’T DO ZIS IN GERMANY. YOU DON’T SEPARATE GLASS FROM RECYCLING? BUT WE DO ZIS IN GERMANY!!!
I’m allowed to say that, I’m German myself. We are obnoxious and tone-deaf fuckers.
That right here is all you need. If you can actually forge a gun and show them how to make gunpowder, you don’t need anything else. Although even then you would probably be executed shortly after for being a threat to the nobility.