I understand your illustration but it seems a very poor one. The Nazis were not a common site because they were the German national socialist party. After the Germans went into Poland and conquered it, they were all over the place and extended their dominion. In 1939 both the Germans and Soviets invaded it. They took the country by force, not some slow and steady infiltration of Poland as they did using Nazi youth corps in Germany itself plus steady propaganda. So in Poland we see a use of force and suddenly, bam, you're a Nazi state.
In the case of the Cub Scouts, you have the possibility of gays entering the scene. And are you likening the idea of "right now we don't have hardly any gay scout leaders and few gay kids in it, but before you know, bam, it's 2022 AD and the whole Cub Scouts is nothing but SSA-attraction folks?
I'm just saying, it's an odd analogy. Not your usual style, that's all.