And they're not trying to make any statement or impact to undercut the dominant narrative. They don't want players to question, they're reinforcing what the player already believes.

The game doesn't need to give you a way out. But for the moment to be impactful you do have to manipulate the player in to believing that they made a decision and are thus culpable for their actions. Players have to feel ownership of what they did to feel shame, remorse, and horror. If they had no choice except "press x to do warcrimes" or turning off the game they'll press x and grumble about being railroaded by the story.