Thread:Balthus Dire/@comment-24097388-20181111005025/@comment-1969141-20181111013531

Sorry, but what people say on Reddit or anywhere else matters little here. Very often in fiction, when a hero becomes a villain, they change name fitting the change of outlook and personnality, often for the sake of a plot twist. Golbez, Darth Vader , Dracula, the Hooded One, Scotia, just to name a few. In this wiki, we use the name of the villainous alias which the audience knows best and associates more with their villainous actions.

Granted Obito is introduced before, but by the time of the reveal, the villain is known as Tobi. The goofy persona was a pretence, and he explicitely and repeatedly stated that his former name meant nothing to him any longer. It is only when he redeems himself that he starts answering to Obito once more.