To answer the obvious question - I don't know whether this means it's not coming to Steam, Epic Games Store or other PC storefronts, but it sounds like it's a Microsoft-only joint for the minute.
Apparently the dude couldn't be bothered to check the steam store page:
i played through the whole of below zero on a deck and it ran swimmingly! i think it was before final release too, so probably not even fully optimized at that point.
Hard to say for sure yet, but there is no reason to include any absurd anti-cheat and as long as they don't lose their fucking minds and decide to use some kind of insane drm, I reckon the answer is yes.