That is interesting to know. With a lot of phone and tablets now you're dealing with 'Retina' resolutions and therefor dead pixels would be considered sub pixel and might be really hard to spot.
The dead pixel thing was just an aside of one headline I'd seen, which seemed notable. What I have actually seen is side by side photographs of Switch docks where the front plate is bent more inwards and resulting in friction against the screen. As I remember you said this was users' fault.
