In real life I like to address this by calling that person, "Sport" or "Champ", for example the other day I was at work and this guy insisted that to read you simply have to internally sound things out. Now, subvocalizing while reading is a major impediment to speed and also to comprehension, which I have found to be true personally and which is backed up by the teaching methodologies I'm trained in for EFL. Now, dude just would not let it go and I was getting heated so I said, "I'm sure you know best, champ." From a conflict perspective, this is unproductive. Punches to the face are generally also unproductive. But, as has been noted by others during my formative years, if there is a button, I have to struggle mightily not to push it. And it felt good. Anyway, later the dude came up to me with an amended argument and a peace offering, "we're both right" which is bullshit. I am right and he was wrong. Your lips should not move when you read.Responding to people's rants with "Cool" or "cool beans" really does seem to encourage them to delete it, I'm not really sure why. Maybe because it's a bit of a dismissal.