You are all missing a big point; the meme doesn't have to appear/become popular in the Unites States. A film about the Confederacy's Downfall during Featherston's last days, as he flees from Richmond to Atlanta to Montgomery (there was no bunker in TL-191), can be made in the US. In it there is a scene where Featherston looses his shit; he would likely be speaking in an uncomfortable but not incomprehensible Southern drawl.
The scene then becomes a popular meme in Germany or Russia (if you don't want too much parallelism) where the subtitles are switched out. It works for them but it doesn't quite work in the US.
Also for some reason I'd expect the more developed parts of Africa in TTL to get a sick kick out of such comedy.
But Featherston wouldn't have the same notoriety outside of North America as Hitler does throughout the world.
And also, he never made it to Montgomery, or even to Atlanta.