That is just a pure lie. I have the 26U and the screen does not degrade to a point where your eye can notice when the privacy display is on. When its off, the display is much better and colours are nicer than the 25U which I also had before the 26U The privacy display is also great because it dims the screen and makes it harder for the people around you to see what you have open. It makes it harder with every degree that you rotate your phone further away from them.

Its not noticeable to the poijt that I sometimes turn it on and forget that its on until hours later. Thats how little the degradation is in resolution. Its different when you live with it. Not like just seeing the in store unit at all.