Yeah, the big problem with P3 is that windows for example, and web browsers are not suited to display higher than 100% srgb content. The result is colors appear off.
That's why I don't understand this nonsense of companies making full P3 gamut displays while it's not supported by widely used applications.
I personally dislike oled because of this (other than pwm of course), the colors just appear cartoonish and digitalized, it's very unpleasing. A screen is supposed to display what things would look in real life, this doesn't do it at all.
Plasma is still to this day the best looking display in my opinion, unfortunately it had other drawbacks.
As for the yellowish/pinkish/greenish displays nowadays, I agree with that. Something I noticed is white doesn't look white anymore in ALL modern displays be it on phones, monitors, and TV's. While If i remember, before white just looked white on screens. I guess it's due to the different phosphors used (red and green while before it was a yellow phosphor with high blue component). The blue was what made the white look whiter, I guess.