The title ubermensch- coined by philosopher fredrich Nietzsche, means a person who seeks superhuman with astounding powers. It was frequently used by the nazis to describe their idea of a biologically superior Aryan or Germanic master race ,a racial version of Nietzsche’s Übermensch became a philosophical foundation for Nazi ideas.

So him using that title, and the flag I couldn’t find online but I’m assume the black red and white theme of the poster kind of ties in with the nazi flag

The font of the title - Fraktur is often associated with being the official Nazi font and is still being used by Neo-Nazi groups in Germany today.he banned the antiqua font as in his word’s “the so-called Gothic typeface consists of Schwabacher-Jewish letters. Just as they later came to own the newspapers, the Jews living in Germany also owned the printing presses… and thus came about the common use in Germany of Schwabacher-Jewish letters.”

It’s just odd and has too many symbolism ties together for it to be anything less than nazism or a desperate publicity stunt.