My biggest beef with the trailer for the game (haven't played the game) is that the mother is obviously suffering from severe mental problems, probably schizophrenia with auditory hallucinations.
I get that the game is loosely inspired by a story from the bible, but the implication that a perfectly healthy (if isolated) person who watches too much of one type of programming will make that person do things that are ethically, morally, and legally wrong is annoying. That same implication always gets gamers like us up in arms whenever people decide to point the finger at our chosen medium.
That said, if the content for the game itself is aimed at a much older audience, it seems like Nintendo is follow their set general patterns by not releasing this. Better explanations would have been nice, though.