If the reply is anything other than ‘get some big boy pants and stop reading what Germans say about you if you don’t want your feelings hurt’, followed by the ejection of the ambassador for having the stupidity to deliver such a note, then it is the end of free speech in Germany.
Gee,
maybe someone should send the dear Sultan a link to this: https://encyclopediadramatica.se/Turkey
(warning, EXTREMELY NSFW, but funny as aich-ee-double hockey sticks)