When taken into the account the whole thing narrator doesn't stick out to me in any negative way. I don't like the overall tone Larian is going for (is there even a coherent tone to BG3?) but narrator never jumped out to me as negative, then let say Astarion does. Maybe because there is already artificiality to the presence of the narrator that her over the top delivery doesn't irritate me as much as an in-universe character behaving in a ridiculous way.
