I'm all for native 4K res.
We are halfway into 2019, 8Gb Vram cards are pretty mainstream.

And for those doomsayers about console not powerfull enough. PS4 has 8Gb of GDDR5 (shared system ram & vram, I believe 5Gb was reserved for Vram alone).
During last weeks E3 Microsoft announced that project Scarlet (the new Xbox to be released in 2020) "will support up to 4K and 120FPS". The reason I say this is because Sony hasn't announced such claims yet, however both PS5 & Project Scarlet will roughly have the same performance.

Anyway with the claims Microsoft provided for next gen consoles, they are more then powerful enough to run 4K textures on this game at higher framerates.