There are 2 reasons for this decision I can think of. One is that previous developers who complained about the series S gave no specific reasons as to why it is making them struggle with development. If I was running Xbox that would not be enough to allow you to omit features from the Series S.
Larian Studios made public that the series S is struggling with split screen gameplay and because of this they will delay the game on Xbox. It seems that after meeting with Phil they came to some agreement.
The second reason here is that as many of you might point out, the game is one of the best performing games on PC that will be released exclusively on PS5. If I were in Phil’s shoes, I would do everything I can to bring that to Xbox.


