there is a thing about Halo (console seller) not doing its job from what it seemsBut my question is why are people surprised by this? This is a cross-gen title, it has to work with the XB1. It was always going to pan out this way.
Halo Infinite is not a showcase for the XSX, and it was never going to be. I think people were expecting or hoping this wouldn't be true, but they were always on the losing side of that bet imo.
XSX will have other games which feel that need and, eventually, a next-gen exclusive Halo of some kind.