You probably wouldn't. I came across a description of "snow blindness" which is essentially sunburn of the eyes and the symptoms of snow blindness are remarkably like the effects I experienced on my ex-X and on my current Pixel 2 display. I can tolerate it on my Pixel 2 because an 8 Plus is still the phone I use the most. But I am on the lookout for news on OLED display improvements. I don't suffer as much on a Samsung S8+ display, even though Samsung is the manufacturer of all these displays.
Regarding other remarks that the X feels too much like a beta product, on the contrary, I felt it was a very polished product. My iPhone 6 Plus felt a bit beta and all of the subsequent updates to it were much appreciated as soon as I could afford to upgrade to each one. The 8 Plus therefore feels very refined to me. But I felt like the X could serve me well for two years or more if I could have tolerated the display better. There wasn't much about it I wanted to see changed except perhaps to refine the camera bump a bit so the red eye and dust infiltration would be less of a problem. It also sticks too far out that a case seems like an absolute necessity to me. But when I had it, it worked as I'd hoped it would.
I do think it's very expensive to purchase and repair/insure. It wasn't as appealing a value to me as an 8 Plus, even ignoring the issues I had with the display.
I’ve had dry eyes for most of my life. One reason I can only tolerste contacts for about 4 hours a pop. Way before the introduction to even the pda