@greaseman1985: Xbox purchases can be made through Xbox.com, a console definitely isn't required. Xbox is just a brand, it's not specifcally the physical box connected to a TV any more.
GB link but: https://www.microsoft.com/en-gb/p/xbox-game-pass/cfq7ttc0k6l8?activetab=pivot%3aoverviewtab
There's no console required at all, it's all tied to your account.
@sladakrobot: No, I don't own the game and honestly have no interest in buying it. I can install it (and Forza, Gears 4, State of Decay 2, etc) simply because they're on Game Pass.
Tidus7000's comments