I went to Grand Central and checked the new iPhones. Last year I had to swap my X many times in order to get the right/good screen. I compared my phone to 2 Max's and 1 regular XS. They were not yellow at all. However, all 3 phones were a bit dimmer, it's not the end of the world and probably even negligible in real life. One Max screen was uneven in brightness, which is expected and comes down to the usual variance. Overall, I have to say it looks like this year the iPhones are better than what we had when the X went on sale last year: there were so many uneven or pink screens.
I gotta say that the Max looks very tempting now that I've tried it in my hands. It feels light like many have already indicated. Also, I sure did check the camera and compared it side by side with my X: it is better! The images are sharper, more in focus, maybe even tad brighter, and that Smart HDR def gets the balance right and it's more improved compared to the regular X, so Apple didn't lie here, as I previously presumed.