Quite correct, "Nazis made him into" was an an anachronistic conflating of what they themselves invented with German nationalistic propaganda that predated them, and which they inherited, built on, and modified. This is what happens when I step outside my period. ;) But unless my memory is very much shot, there was a historical tendency for more than a century before 1933 to turn Fritz into a model German prince instead of the "I do whatever the fuck I want" prince he really was*, that we can be pretty sure he would also have objected to.

* More accurate, or at least more complete, than "Francophile," which was merely one side of a polutropos man.

Re the Austrians, that is an excellent point! I shall update my mental rant.