Regarding this windows central article

[Graylyn]

https://gamingbolt.com/final-fantasy...me-on-xbox/amp

From July last year. Still nothing promising it coming to Xbox.

https://gamingbolt.com/final-fantasy...e-phil-spencer

The article you mentioned, was Phil saying it, with no date or basis.

Thanks for doing the digging. Since Phil is the head of Xbox his word carries a lot of weight. And we know that they were being pretty accommodating with policies in regards to the porting process.