#he is privy to literally everything and beyond that with his intelligence network

[kaeyachi]

I've seen some people who are saying "Kaeya already chose Mondstadt!"

Sure, we can agree that his heart is with Mondstadt, but his storyline so far isn't leading to a clean-cut decision at all. Something will happen that will make him decide, and that means there will be heavy consequences for either choice.

He could learn vital information that would make deciding hard for him, or he could be forced into doing something he doesn't agree with to keep others safe.

He'd do everything to protect the people he loves and cares for, and if that might mean teaming up with the Abyss or the Tsaritsa? Even if he might get hated for it? Even if it could kill him? He'd do it.

And do not be so quick to think that he doesn't care for his homeland- a nation where time and time again, the narrative of "not all of its citizens deserved getting cursed" and "there might be a cure to the curse" keeps coming back (the cure being known to an Alberich at that, as far as we know of). No matter how he may feel about his father, he is still aware of his responsibilities as an Alberich. He says he doesn't hold much concern now for his birth nation, and yet he has used what he knows in concerning ways ( Windblume letter to Venti that could be perceived as a threat/warning, luring out Dainsleif with his surname)

Basically, what I'm saying is that there is no way it is going to be that easy for him.