I received my Pixel XL2 today and literally have zero blue shift. Coming from a Note 8 the screen colors definitely do not pop but I know it's deliberate and can be fixed with a software update. Other than that the software is absolutely amazing and the screen colors do not bother me and they do create less fatigue. Display is definitely warmer than the Note 8 but it's a very nice screen.
When you try the camera, listen to the speakers and see how smart this phone is you'll be as amazed as I am. Definitely the best phone I've ever used.
Received mine the first week, the 19th to be exact, and I have no problems. I saw the blue tint at angles when I bored up there first time, but only because I looked for it. If these phone sites weren't making such a huge deal about it, I wouldn't have noticed or looked. No sings of burn in either. Like others said, I'm sure they are some people work real issues from damage or a bad batch, but think it's being blown out of proportion in an attempt to get clicks.