That I didn't realize. I've used the iPhone since the 4 when verizon first got it. Then I went to the 5, 6, 7 Plus, and now 12 Pro Max. So I've not had experience with some of the newer models until now. The others people are using to compare. I can tell you though, I have had training, and some experience in Television and professional video. While I haven't done much since I got out of school, I have tried to keep up with at least basic calibration so my content looks right. I think I'm the opposite of the majority making an issue here, or my particular phone is working correctly. Either way, for me the whiter displays hurt my eyes, especially when bright, and the warmer display is more comfortable on my eyes. Not saying there aren't issues. Experience also tells me though, Apple isn't the same company they used to be and there are less and less true professionals who I come across in the Apple communities these days. (Professional content creators that is). My mind pretty much has gone back to myself when I wasn't used to looking at warmer calibrated displays so when a accurate display was viewed, it really bothered me. Now I can't look at a cool display.
With all this said, I'm not trying to minimize people's concerns as mentioned. I just feel part of this is average users not being used to warmer displays, and part of it is faulty displays that show the defects more than others. My main point is, the majority of people I have seen review the new phones who are creators don't make an issue out of the color. Most of them, if not all are also genuine people so I feel if there were real issues to be concerned about, they would speak up. As mentioned most of those I see raising issues are just average people who don't like the new look. Out of curiosity though, and to settle it for myself, I would if possible, if i still could go into the TV studio where i had my classes and see if they have tools to look at the display so i could see for myself in a professional setting whether or not my phone at least was off or not.