I thought the same thing. But I just think it's the marketing. The white is better suited for the marketing materials. With the iPhone 7 they promoted the jet black heavily. And it was very constrained. And with the iPhone they use the gold one now all the time. I just think it's based on the aesthetic Apple wants in their videos and ads. Apple loves white devices as we can see with the Apple Pencil, the Airpods and the AirPower.i was wondering why they are advertising the white one way more than the space grey. maybe they're having a harder time making the space grey frame or something. there has to be a reason
And I am quite sure that the Space Gray iPhone 8 and iPhone X will use the same colouring, and there have been no issues with the iPhone 8 so I don't see that as a problem for the iPhone X.
And the frame surrounding it is very similar to the stainless steel AW. So they have some expertise there.