If this game has a message, it gets lost in the meaningless violence. There's a difference between being edgy but having something to say, and just endorsing violence for entertainment.
Maybe you could argue that the bad ending is bad for a reason, and the good ending is good, and that's the message, that violence is bad. But even then, you get more content for the bad ending, and the rest of the endings feel more like an afterthought. The game is designed to exponentially reward you with content for pain, and that's why it feels less like a game with something to say, and more like a torture simulator.