Lots of "people are delusional" posts both for and against being tossed around lately! My Panda/Stormtrooper XL is still almost a month out, so I don't know first hand, but it seems to me there are two very different types of issues that people are raising.
Some people are seeing defects in the panel - I've seen low-light all gray images that seem to have uneven lighting, and others that look great. There are also reports of seeing graininess or "dirtiness" visible in normal use, only in low lighting, and not under any circumstances. Rather than assume one or the other set of reviewers are blind (and that the online photos are faked) it seems more reasonable to me that we're seeing greater QC variability in LG OLED panels than in Samsung panels, which I suppose is to be expected given how much more mature Samsung's phone panel manufacturing is. Given that no one else has mentioned similar issues (and some reviews have really concentrated on the screen quality) I'd assume that the artifacts in the image posted by Vlad Savov are a defect specific to his panel. It suggests that when my Panda 2 XL arrives I'm going to need to check to see if I am a winner in the panel lottery.
The color saturation is a completely separate issue. If enough people complain I'm sure that Google will offer a secondary, oversaturated color mode. Now that Oreo has proper color management it shouldn't be difficult to do. I personally prefer more accurate colors, but I also work on color calibrated monitors and do extensive image editing - it's not a preference I'd expect everyone to share.
So I don't see any reason to panic. I've watched a bunch of video reviews (I'm sure many of you have too!) and I'm not seeing a screen that has major problems. Even video reviews where the reviewer is intentionally moving the phone strongly off axis (this happens in the PhoneArena review IIRC) the bluish tint does not look out of line with my current device (Nexus 6p, rocking an older Samsung panel). I do think 2XL owners might need to check their panels to make sure they got good ones, and I personally expect to like the color profile of the phone, but if not I suspect that Google will make more saturated versions available in the near future (though by all means keep asking for it if that's your preference - this is probably a "squeaky wheel gets the oil" situation).
Cheers!