I found a way to get rid of a lot of the yellow tint. I suspect this is something along the lines that Apple will do if they address this issue. Go to settings, accessibility, color filters, click on color tint. Turn the hue down to halfway. I don’t know why it is at max. Notice the white letters on that page actually turn white. Now display a white page in Safari. You will instantly notice how much more white the white is. When I put it next to my nephews 12 pro I can see the difference. You can also turn down the intensity all the way. I have mine at around 20%. Hope this helps.