Decent review but the part about the Unobtanium setting being for next-next gen hardware I'd say is incorrect considering the highest end Nvidia card you tested was a 4070 Ti, The perf difference between that and a 4090 in the real world is substantial.
Tom needs to send you 1 of his 4090's so your reviews can cover all bases
You can quite comfortably play at 3440x1440 maxed out "Unobtanium" settings and have decent FPS using a 4090 while using FSR3 set to Quality and frame gen on.
Even better performance can be had if you use the daily updated PureDark Nvidia Frame Gen mod alongside DLSS set to Quality, Example with FPS counter in the top left at 3440x1440 using the Unobtanium preset -