Is TL-191 ASB?

It was the joke.

No wonder I missed it. Not saying its your fault.

I mean, even if you want to claim the story is about Featherston, he's very shallow. If you think of Hitler, Stalin, etc. they had goals that went beyond "punching America!"

I'm not even sure you can call it interesting, and I'd note that there are plenty of stories which have characters that aren't cardboard cutouts on the best sellers lists...
But those are by good writers.
 
I think a way to look at it is that Jake Featherston, CS dictator for life is not implausible. Jake Featherston, Adolf Hitler in butternut with a Virginia accent is. Hitler represented the issues of the German Empire and an ideology that is impossible to transplant into any version of the CSA. Had Featherston been depicted as a blend of Father Coughlin and George Wallace, that would be more typical of a Confederacy's totalitarianism. Germany had a literate, urbanized population that was used to universal manhood suffrage, a welfare state, and with one of the largest economies and militaries of pre-WWI Europe.

None of this applies to the CSA, even in TL-191. Featherston could have been more of a hard-edged and successful Mussolini Expy as opposed to a Hitler one. But then TL-191 has Lee inflict a Nashville on the AOTP in 1862 so I don't think it much cares about internal logic.
 
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