You might’ve been misled by the preview image, this has nothing to do with filtering pixel art. It’s a really interesting read about how game developers can combat aliasing caused by rasterization, and a new method that’s far more accurate than the alternatives.
There’s no actual evidence that blue light hurts your eyes, but it can affect your sleep. Instead you should worry about the distance you sit and the brightness relative to the room, as well as making sure to take regular breaks.