Even if Starfield is as good as it needs to be, I'm going to experience it as a Steam game. The Xbox aspect will be an annoying extra login ruining the Steam Deck experience, and worrying about the safety of my cloud save.
I like that Xbox and PS are both porting to Steam now, but for Xbox it just means I never need to own one.
Welcome to 2012?
Fairly certain MS was throwing broken versions their games into Windows 8's store, before launching XB GP and later PC GP.
It still makes no sense for Sony to undercut their console, following MS into the PC space.