>>96350224
To explain more thoroughly, my issue with this player is that they are narrating the character as being aware of the storytelling patterns at play (I personally do not think in terms of narrative tropes, though...), and narrating the character's "justification" for any given contrivance at play.
Essentially, the player is hijacking my narration of the events and circumstances of the campaign, and saying that their character is the one actually telling the story and coming up with this plot element and that.
To paraphrase a very rough example, let us say I describe a dragon in the scene. (This is purely an example. No actual dragons have appeared in the game thus far, nor will one ever.) The player describes their character's justification: "There is a dragon in this scene because [character] thought it would be a [insert roundabout way of saying 'cool' or 'awesome'] addition to the story," or something like that.
It very strongly rubs me the wrong way. I deeply detest and contest it, but this is just a three-session game, and we are already one session in, so I will just have to deal with it. I have already informed the player; this is the best resolution we can work with.