The Manson Family were fairly close to home for many people and that didn't stop them from being idealized and made into a pop-culture symbol. The idea that a Ubisoft caricature of white supremacy or religious fundamentalism could be much less terrifying and much more interesting and exciting doesn't seem too far out of the odds.
Don't get me wrong, I think it would be, as you said, genuinely original and interesting. For a game, I'm really excited to see what they have to work with. As far as the revolutionary effect on modern politics though, I just don't see it doing anything terribly productive. Edit: More like I don't see it doing anything, honestly. Besides peeving the nutcases on the far right and the far left.