I think the everything = v is a stereotypical depiction of German.
F becomes v because the German v is pronounced like f, Volk = [folk]. Danish doesn't use V's for the F sounds.
And W is pronounced like V in German, but the Danish V is pronounced like German's W so kol. W isn't really used in any words that aren't derived from other languages in Danish I think.
Blanyway I stronkly blapprove of the message in Hellpotatoe's comic. Everyone using it for inspiration is officially blacommended.