Strange. I've never heard people here comment on how the Apple Watch is, in your words, "an oversaturated mess, with a fake number of pixels."
I have an Apple Watch. While its graphical interface looks fine enough, all it takes is someone to text me a photo and for me to see it on the watch to see what an oversaturated, poor-pixel mess the display can be.
Don't get me wrong, I love my Apple Watch. And an OLED display for a watch is adequate given the tradeoffs that needed to be made (and the fact that there are way worse smartwatch displays out there). But OLED is not a display I want to look at photos on for very long, because the color reproduction is nauseatingly bad to me, particularly with skin tones. With my smartphone being the device where I take the most photos - and view them - OLED would be a huge step backward.