Rest assured that the irony is on hitler too: in many polish towns the only thing remaining that remenbers one that this was Germany once are the inscriptions at yewish cemetries.
Just imagine that the holocaust Never happened: German would be much closer of what the Nazis thought it should be, a world-wide spoken language.
Bloomberg didn't study Physics because you had to know German for that. Accadamia abandoned German. As did most of german-americans.
Yiddish was the defacto language of many Zionist settlers. Israel speaking German, unimaginable today but a Real concern for zionist theorists that complained about too few people adopting hebrew.