That’s not some sort of secret “rip off”—it is based on the assumption that you will recognize and make the association.
(Still despicable, of course.)
I think one of my points is that in choosing such an image the idea of “propaganda” was stirring in the mind of the creators. Much like when De Blasio’s daughter made that slip up back in Nov and said Biden helped steal the election. Which of course he did. As for the other point, I don’t think many younger people would have any idea where that image came from. They don’t even learn history anymore.