Yes, Fallout 3 had all of these things they took from the history of slavery -- but the game never connected those things to the actual history, nor to the racial backgound. "Yeah well the history books got burned" is a rationalization of the situation, not a reason to design it that way. It would have been perfectly plausible to have that slave leader talk about being inspired by his ancestors (hi oral history) instead of being inspired by a mangled version of Abraham Lincoln which conveniently forgot about the centuries-long oppression of black people.
Yeah, sure, although I'm still sceptical about the degree of historical knowledge left in the world. It's a world where people rarely even call cities by their original names (ok, more common in Fallout 3 and NV). And again, nuclear war. Teaching some american slave history over several generations to your kids doesn't seem plausiblly high on anyone's list of priorities. I'm not saying it shouldn't be in games, just that it makes sense this way in this particular series.
It's not a rationalization per se. It makes sense to design it this way. Lack of historical knowledge is a common theme in Fallout.
And how is the Railroad not a connection to the actual history? It's literally, LITERALLY the Underground Railroad for freeing slaves. Do they really need to explain to the player 'Oh yes, we call our organization The Railroad because of the historical organization hundreds of years ago that freed the black slaves from their white masters and brought them to safety in the North. Would you like to more?'
I don't have the highest opinion of the average intelligence of the average gamer, but c'mon. Give 'em some credit. Especially in the US people are able to understand that reference without having some educational mother penguin chew it up, digest it and vomit it in their brains.
And yeeeees, I fucking know that penguins don't chew.