I have figured out the bad press screenshots from Square Enix. Seems like they are from the Xbox One version of the game. Maybe they always release those screenshots because of the UWP platform? The demo was also being played on a devkit and looked pretty much the same as Xbox One during the event, with its frame drops. I wonder why they are wasting their potential showing the Xbox One screens and footage =/
There is an important thing to mention here, aside from the frame rate, the Xbox One version hold up pretty decent in motion and I say that as someone who has played both versions of the game. The dynamic resolution makes it kind of tricky and the jaggies are more frequent, but the rest of the visuals are a close match with the PS4 version of the game but with a better frame pacing and a stricter frame drops.
That said, the screenshots are absolutely horrendous and since I wanted to test the screenshot feature, I was shocked to see the final result. When I took these screens, I can assure you that the visuals weren't as bad as seen in the screenshot. These screenshots are pretty much the PR screenshots that SE released a while back including the infamous Chocobo Ride one. FFXV is simply horrendous on Xbox One for screenshots that involve motion or some action.
Behold the ugly mess below and do keep in mind that the game never looks as ugly as seen in the screenshots. FFXV is definitely not photogenic on Xbox One unless we stand still and take screens
Static scenes meanwhile look much better as expected.