A famous french humorist, Desproges, said: "On peut rire de tout, mais pas avec tout le monde" which roughly translates to "One can laugh of everything, but not with everybody" and it applies well here. False subtitles are a common way to use videos for fun, whatever is said in reality, and german isn't a widely spoken language so it won't bother most of people (even if german community if quite important on ManiaPlanet).
Moreover, about making fun of darkest hours of European history, how do you deal with movies like "Inglorious basterds" or "The great dictator" (even if, I agree, it was before the worst of the war)? Or the Monty Python and the Spanish Inquisition (which were really dark times too)? There are so many examples of people making fun of history it seems weird to jump on CrAzYdriv3r like this...
IIRC, it has been done already a few years ago on the french TM forum with the same scene yet nobody complained.
Back on the topic, I found this funny too
