Investigations into the Starfield preload files reveal a distinct lack of Nvidia DLSS or Intel XeSS footprints, suggesting it will only support AMD FSR.
Sure, if it runs properly without upscalers that's great, but that doesn't mean it should be released without them either.
DLSS/XESS are very easily implemented, they aren't because AMD is preventing it.
FSR2 is kind of the most important upscaler to me though, as it works on the Steam Deck where it's likely desperately needed, and while XeSS technically works on the Steam Deck, the (negative) performance impact of FSR2 is way lower.
It's also always nice to see all upscalers in the same game just so we can compare them in their most up-to-date versions.
Only in visual quality is it miles better. Performance wise they're pretty close these days, with the slight edge to DLSS.
But all PC games moving forward should ship with FSR, DLSS, and XeSS to accommodate everyone. They shouldn't even be too hard to implement as Unreal Engine has made it as simple as a toggle to enable DLSS. Modders have also figured out their own ways as well. Because of that, just having only FSR looks like corporate greed.