I think it's completely orthogonal issues, no? You probably refer to OLEDs superior black levels etc. But this thread was about subpixel rendering. One can be bad while the other can not. It's unrelated.

They're related because many OLEDs use a non-RGB pixel layout, so it's necessary to turn off sub-pixel anti-aliasing, and the net result seems worth that tradeoff now that screens are high-resolution enough that sub-pixel anti-aliasing makes less of a difference.

But the high resolution is not a property of OLED displays. The tradeoff might be worth it, but it's still a tradeoff I'm not willing to risk.