Change need to start somewhere, for example eink is not more developed duo to manufacturers would have to sell it and advertising that “old” technology are bad for our eyes and health. They will never do that, unless persons are aware of the problems. Pwm, temporal dithering or regular backligt is a long term health problem for many persons, and apple and other big companies are aware about it. Many persons are blind and have serious vision problems because big companies dont want to develop more eye friendly technology, they only think about “beautifull” screens that sell a lot, and not “healthy” screens. One day they all will be in court!!! They are aware about the problems, most of us are very naive, long term is the problem, not short term.