Pistachios aside, I do think there's been some level of failed strategies with some of these titles (following on the tail of #FE's... strategy). Both games are expected in ~mid to late~ February (Setsuna and AoT) and both are completely absent from pre-orders at the end of January. Of course, they may pick-up suddenly towards release but generally that's not normal behavior.
Setsuna has always been a weird one, though, especially from how it was introduced. It has, since its first introduction, felt like a game trying to be Bravely Default-again (tight scope, not-quite-as-chibi characters, smooth painterly aesthetic, old-school RPG, lack of a budget). Which struck me as weird considering Bravely Default already existed, and then SE sent out its sequel to kill the franchise. But I guess Bravely Default didn't exist on consoles. (Of course, I could be completely off-base with my thoughts here.)
And I think AoT may just be a product that on one side is marred by bad games preceding it, and on the other a media property that has an audience that doesn't carry over well to games even though the anime/manga could fit a game well.
As for DQB, I think the project was just mishandled from the onset, from platforms to price to features.