I think it was a bit of a change for them in sound and style, nothing drastic though. It lacks the feeling that all of their other work gives me though-- that feeling of apocalypse and despair and destruction, yet ultimately hope. It's still really good post-rock though, and I agree that everything they put out after F#A#infinity has to measure up to it (and LYSF, but F#A# was just an out of nowhere masterpiece), so yeah. The fanbase is divided about Yanqui usually; some love it, some hate it, some just think it's a good album. I'm the third option.