The issue is, Hoyo’s writing isn’t consistent. Look at Nod Krai and how it set up the Fatui’s active invasion and colonization of the Frost Moon Scions only to completely drop it after the first couple of patches. And that’s just one example of the many.
The problem is people don't understand the art of deliberate misdirection. You think fatui is evil cause hoyo wanted you think fatui is evil, through lazzo trailer. It was through story progession we knew our perception of them wasn't accurate, just like rest of world...