I don't know how to explain phobia of moving pixels, really. I get goosebumps on my skin whenever i see small clumps of square pixels moving when i touch the screen. (Usually happens when I draw on my phone/Ipad.) It's only groups of small, moving pixels, like I can watch/play Minecraft and similar games perfectly fine.
It's something like a small glitch you see in an old computer, i suppose. Asked my friends and none of them have this feeling.