How big of a problem is the Pixel 2 XL's screen, really?

Ping / Counterping is a special feature where editors of The Verge debate issues from the world of technology head-to-head, no holds barred. Vlad Savov and Dieter Bohn are bringing it back after a very long hiatus to debate whether the screen on the Pixel 2 XL is a deal breaker.
I reviewed the Pixel 2 and Pixel 2 XL a couple of weeks ago. After that review was published, we discovered that the 2 XL exhibits more image retention than you'd expect on a flagship (or really any) phone, especially on