Re: Plothole: Sasuke's implanted eyes can revert back to normal. -_-
Kakashi/Nagato/That guy with Mizukage who has Byakugan/Danzo cannot deactivate because they did not get the eyes from a sibling, nor do they even belong to the clans
Sasuke turned his off because Itachi is his brother, they are compatible plus they are actually Uchiha
Madara hasn't turned his off because maybe he doesn't want to ? I have never seen Madara without his eyes active in any flashback or anything, even when he was talking to his clan about voting for him to be Hokage his eyes were on 3-tomoe..maybe he just likes them on
I mean if you had the Rinnegan/EMS and massive godlike chakra like Madara why would you turn them off ? lol
Obito cannot turn his off apparently..his sharingan or rinnegan, rinnegan because its not his eye nor was it his brothers/siblings, his normal eye has never been off even in the recent chapters I believe because Kakashi has his other eye and cannot turn it off, we don't know what happens when an Uchiha gives an eye to someone and lives..all the Uchiha who gave there eyes to people died..and the ones who died before eyes were taken..were already dead..
Obito is the first Uchiha to live after giving someone else an eye. Shisui lived shortly after Danzo took one of his eyes and gave his other to Itachi before committing suicide(assumed suicide), so Obito not being able to deactivate because his other eye is with someone who can't deactivate is logical..it also explains the shared vision thing going on..Obito can sometimes see what his other eye is seeing, but Kakashi cannot ever see what Obito sees because the eye does not belong to him.
There is no plot hole here, you are just confused because Sasuke turned his off while Madara did not, Madara just doesn't want to.