I think I figured out how Sasuke might be FV

[Darth Uchiha]

Maybe, Kaguya's and BZ's words will make him see things from their point of view and he'll join them against Naruto.

 

[Seventh Sama]

Kaguya wants to take both of their chakra tho....

 

[Darth Uchiha]

Kaguya wants to take both of their chakra tho....

Good point, but still, Sasuke was never really that hard to manipulate.

 

[The Work]

Their clash is inevitable.

Their ideals are way too different.

So they will have a clash to the death it hasn't been hyped up all this time for nothing.

 

[Desiigner]

Hell nah, what've you been smoking today?

 

[Six Paths of Logic]

Maybe, Kaguya's and BZ's words will make him see things from their point of view and he'll join them against Naruto.

Lol, that's terrible.
From Sasuke's actions/reaction/words to Kaguya, Black Zetsu, and Madara, that doesn't seem to me that Sasuke wants to join them (i would provide scans, but im too lazy right now).
What seems more likely is that Sasuke always had/has an agenda of his own.

 

[Second Path of Pain]

First they have to deal with Kaguya we'll se about the rest.

 

[LordNarutoSo6P]

Lmao xD Sasuke isn't that stupid!

XD

 

[cmoG]

Not happening.