DxO's official claim is that the initial report was not complete, thus they pulled it. They also claimed that they were going to focus more on the more affordable camera systems, mainly 35mm.
Personally, I believe there was more to it.
Per the host of FujiRumors, he approached DxOMark about reviewing the GFX and their initial response was they don't review X-trans cameras, net they had not even read about the camera and assumed all Fuji Cameras were x-trans, which of course the GFX is not (thank you Fuji).
I like their reviews, and there is no doubt the 645Z more than likely should be the same score as the X1D, and 1 point, is not very much anyway, but the files from the Z are still amazing, have always been, and considering that C1 still won't support the Z, leaving Adobe, means even more. The current LR conversions for the GFX and D850 are lacking, very lacking IMO. C1 does a better job on both color and noise at least from what I have seen from my work.
Hopefully Pentax will carry the line forward, but I have doubts, as Ricoh, appears to be headed in a different direction. New lenses are really needed for both the Pentax 645 lineup and 35mm Line up.
(Side Note, Pentax/Ricoh had a huge opportunity to really take some market share with the K1 and pixel shift. However Pentax never pushed Adobe to fix their one and done raw conversion and I guess hoped that users were going to be happy with SilkyPix. They also should have worked with P1/C1 and gotten a conversion worked out with Capture One. It's not that hard obviously as Independent software producers like Iridient and Rawtherape both have excellent conversions, vastly superior to Adobe's terrible attempt, but both lack the tool set I am looking for).
Paul Caldwell