From your link there:
> written in a mangled form of German.
If you show this to anyone who knows German, they will recognize that this was written by someone who doesn't.
I believe the comment you replied to is what is known as a "joke".
Given that the commenter left another comment about having been misinformed, I don't think it was a Joke.
So the stereotype rings true then.
The one about German’s lacking a sense of humor?