I know the question wasn’t aimed at me, but I think a (perhaps slightly tendentious, certainly whimsical) case could be made for XoR as soft-science fiction.
It’s playing with social sciences, after all–poli sci, sociology, anthropology–in a way not a million miles removed from the way more traditional sci-fi plays with physics.
Maybe a wildly unscientific magic system rules it out. Fair enough. But when I think about what made Battlestar Galactica good, for my money it was the terrific resonances with the “soft” sciences–with the politics of survival, the anthropology of extremity–rather than anything about robotics or space travel.