When his eyes faded he lost his powers. He couldnt even activate susanoo. Once he got itachis eyes, he got powers again. The fact of the matter is if he didnt get itachi eyes he would be powerless.
so not borrowed, just gifted..again.
MS is Sasuke's peek on his own..
CM is a hand me down (Orochimaru)
godtachis's eye is a hand me down an what came with it. (AMATERASU/PS) No MS user has been shown using PS so it's godtachi's as well
His Rinne is somethin he didn't awaken on his own but had it given to him by Hogo.
If not for those characters then Sasuke would be blind. That's not to say he'd be useless but he would be bling while his rival would still be sage with his bijuu infused with his own chakra..
All powers are borrowed from Kaguya. You dweebs can delude yourselves into thinking it matters.
Sasuke got more handouts than anyone, that's for sure
Yeah without kurama naruto dies of a heart attack. What a immense fodder