The person you're replying to is saying that it wasn't written. If you are the author, I will believe you that it was. If you are not the author, I have no idea why you think you know more than anyone else does.
Even if they didn't make a fair point (and I think they do), I would prefer their pedantry to your palpable contempt by a large margin. I mean "palpable" literally. My body is tenser and my heart more sad having experienced the voice you just used on that person.