What are you talking about lmao, my knowledge is the most up-to date material , go read DisplayMate's report on the Note 4 if you havent yet, please do tell me what "modern Pentile" is. I never discredited the Note 4 display at all, I know it is great, the higher resolution covers up the Pentile effect and basically eliminates it when its at a high enough resolution (1080p/ quad HD espcially) but it is still there, pentile is still pentile and it will always have one less blue and red subpixel so that is why the Note displays white and green pixels at 511 PPI and blue and red subpixels at 366 PPI (which is well above 330 PPI but still under 400 PPI)
I also never said the Nexus 6 had a better OLED dislay despite it having a RGB pixel layout and all its pixels at 499 PPI(close to that mark)it defitnetly does not and is alot duller in terms of brightness and also other things which determines a displays overall IQ. Im merely talking about the sharpness/PPI of the display , in its native resolution.
And your telling me "i need to update my knowledge" lol....
They use Pentile pixel layout over other pixel layouts ,for one big reason : pentile pixels and having the OLED pixels in a pentile layout format (refined diamond matrix layout in Samsungs case which helps Pentile, but doesnt completly cure the 1 missing red and blue subpixels still) makes the OLED pixels last much longer and take way longer to burn out then other pixel layouts when using OLED . The pixel life is dramatically longer on Pentile compared to others and that with other pixel layouts (when using OLED as display technology) , the pixels burn out much quicker (according to Samsung) and already to start when using OLED as your display technology , pixel life is not up to LCD pixel life yet , that is one commonly known disadvantage of OLED right now in its current state(obviously LCD has its flaws too)
This is why there is already reports of people having permanent screen burn in on their Nexus 6's (erica griffin also got permanent screen burn in on her nexus 6) cause it uses a RGB pixel layout and is just not the best refined AMOLED tech around(Moto X 2014 display and Droid Turbo display look better actually imo, and go brighter and etc)
And lastly , alot would argue and say that they can see pixelation and see pixels at 366 PPI, when your viewing blue/red/redish text and content on the Note 4 (lmao a good example would be neon red/bluish text on porn websites, you can easily see it is slightly less sharper but obviously still great looking and very high res at 366 ppi)