Board Thread:Versus Debates/@comment-31338621-20200309130706/@comment-32685487-20200314180658

Here is the issue with your idea, Obito can still see when he goes intangible which means his eyesight works still and therefor his chakra is being used to see too (Sharingan). So either Obito really is a sensor and he can't visually see when he goes intangible, or he can see and therefor be caught in Genjutsu.