hpst Youre trying to find one reason behind it all and thats the biggest obstrucion on solving it. I am bothered by aliasing (aliased subtitles in bsplayer gave me headache, turned it off and voila, its gone), I am bothered by PWM (tested with oscope on my LED ASUS work monitor, PWM below 100% brightness is painful, full brightness and Im using it for very long time now). It can also be bluelight, it can also be dithering. And the reason it can be so many things is because in my opinion, each of them disturb vision and especially binocular vision.
User erwin has just proven with his case that its both - new tech does something (many things) differently, and we might all have certain kind (maybe not all the same kind) of visual problems ( i do, getting treated now). Its a combination of things, thats why its so elusive. It has to be considered screen by screen, device by device. Unfortunately. And that is because the vision we all have (or lack) also plays a major role.
Also paper is way more textured than any screen ever will. Ink might be fuzzy, but the canvas is not and its in the same visual distance. Also some people reported that putting very textured matte cover on their phone screens solved it. Movement and fuzzy fonts might appear the same to an eye, both are hard to fixate upon.