exactly that , he didnt steal anyones eyes , kakashi has the same MS as obito/tobi afterallIt's very weird, it doesn't look like he took someone's eyes because they look the same way as Kakashi's. Then again, there's no proof that Kamui makes you lose your eyesight...
It has to be, just like Kakashi said it's only one jutsu!Its not Kamui when he goes intangible, but it is because of the eye that he goes to the same dimension. Its not EMS because it looks just like Kakashi's and since he can still see then he hasn't been using the full Kamui.
Both kakashis and tobis jutsu are called kamui and yes it is kamui when he goes intangible kakashi said it that both tobis intangible and teleporting jutsu are just one jutsu.Its not Kamui when he goes intangible, but it is because of the eye that he goes to the same dimension. Its not EMS because it looks just like Kakashi's and since he can still see then he hasn't been using the full Kamui.