SPOILERS, since there are people who haven't played it yet in this thread.
It seems relevant to consider that Konrad, which is the creator stand-in, is ultimately dead, and Walker, the player, is hallucinating an argument with him, where Walker must admit that he was responsible for everything that transpired. The ultimate conclusion of the game is the developer is basically saying "you did all this yourself, I'm not even here". While the shock of internalizing all that transpired and the player's role in it might shock some people into looking at these games beyond just the action and thrills, what it doesn't do is to guide them to question the premises, framing and conclusions of a game like this. The truth is that the players only have done that which the developers have enabled them to do, and this is especially important to consider when it comes to games that do try to make the player feel heroic for war crimes and historical revisionism. The creators are alive and present,
I definitely can't equate "Do you feel like a hero?" with being mindful about entertainment, especially not in its harsher version "You are here because you wanted to be something you are not". Unlike the video, I don't think we can gloss over that in the same scene the player is told "None of this would have happened if you just stopped". Applied broadly, it seems like what the studio suggests, is that people stop engaging with war shooters entirely. That indulging in this military fantasy at all is inherently reprehensible. That, like Walker, seeking someone to blame for the moral failings of such a story is an excuse to protect your own ego.
But usually, there are people who are responsible for the moral failings of military propaganda.