Besides that I hate that old “German sounds angry” shit
I mean:
- It's funny because it's true
- All non-Germany speaking countries have at least 1 joke, where the point is with German language you just don't know if it's a new vacuum cleaner brand name, or a declaration of war.
Nice scientific approach to proving that German sounds angry.
He's also wrong by saying that people think German is warlike and ugly because of Hitler. German neighbours (e.g. Poles) have written sources hundred years old proving him wrong (at least 1890-ish)
Edit: even older lol, Wincenty Kadłubek was implying that in ~1200