Same here but maybe it's simply a case the filtering out blue reduces the total light intensity enough to be easier on the eyes. Wonder if similar results could be accomplished by filtering red instead or simply turning down the brightness on our devices and using lower lumen bulbs around the house.
Blue light has more energy per photon (energy is proportional to frequency). Therefore, it is better at ejecting photons from atoms and damaging molecules than other visible light. UV is even worse.
Also, semi-related, eyes are less sensitive to blue light, so if you want to achieve the same effective perceptual brightness, you need more photons if it's a higher color temperature.
