As to why polarisation is a problem? no idea. I don't know of any reason why it would be an issue. It is simply the strongest common link between the devices I can and cannot use. We can hypothesise all day about what causes our problems, but its evidence that counts.
If I can take an OLED phone that hurts my eyes, remove the polarising filter, and find it still hurts my eyes I will know with sufficient certainty that I am looking in the wrong place.