Though when it comes to shared arts, such as games, it's the artist or dev's duty to convey their idea or intent.
I think I agree with most of what you said but this makes me hesitate. What if the intent were something more nebulous? Like using a game to explore an idea where you have no firm conclusion about the thing yet? Duty might be the wrong word. People prefer that intent is conveyed but there is really nothing owed there. David Lynch does fine despite not quite conveying his intent. I could see something like that working for a game.