Voice of reason and knowledge here. I would add that sometimes cameras can pick up things that human eyes do not.
I was at Apple store this Wednesday and saw a table full of iPads, and they were all blue-tinged. Actually the iPad Pro was bluer than the Air 2 and mini 4, which might have to do with the backlight needing to light up a larger surface. On a bright side (no pun intended), it has the same anti-reflection technology that the new iPad mini has, so the colors are vivid and viewing angles are fantastic.
But it is sad that Apple is now behind the competition when it comes to color accuracy, and even sadder that it appears to be a deliberate decision. (e.g. shared by all iPads and iPhones) Those who have trained eyes can easily tell apart the difference between iPads' screens and, say, Surface 4 Pro's screen. Samsung and Google also have surpassed Apple in display calibration in their flagship devices. Apple appear to have succumbed to showroom appeal with their i-Devices' displays.
Then again it is hard to blame them seeing how people decry "yellow screen defect" for their Nexus 5X/6P and demand replacements for a perfectly calibrated sRGB display.