An option to mute the narrator would be absolutely fine.

Personally, I'd prefer the narrator be kept, but the lines be limited to objective observations rather than subjective feelings being forced on the PC (barring exceptions where it makes sense, e.g. mind control and the like). I'm fine with having things described to me (that's what a GM, i.e. the narrator, would be doing in an actual game of D&D), but not how I feel about them.

I should never be told I pity a creature, or that I am disgusted by it, and so on.