ertzui

An "ertzui" is a German man or woman or person who is very nationalistic about their technology.
They will boast about it and german efficiency whenever they can, and nothing can stop them from doing so, even however much you try. Even if you do stop them, they'll continue the next day.

The term comes from the German keyboard QWERTZ, where the keyboard has "y" and "z" switched, unlike the English QWERTY counterpart.
This means it only applies to people German speaking countries in Central Europe.

Sarah, a natural ertzui, was very emotionally damaged when her best friend insulted the Germans and their technology.