Obito also knew it would be rather difficult to step forward now, claim he was Madara Uchiha, and become the Akatsuki's new leader.
But he had never imagined that Deidara and Sasori would firmly believe he was Tobi!
Even though he really was Tobi...
Tobi Uchiha... pfft! Obito Uchiha continued posing as Madara Uchiha and communicating with everyone. Then shill number one, Black Zetsu, stepped forward to vouch for his identity, followed by shill number two, Kisame.
At this point, Kisame firmly believed in Obito's identity as Madara Uchiha!
With those two backing him up, the others began to waver between belief and doubt.
But silence did not mean acceptance.
In the original story, by the time Obito took over, almost everyone in the Akatsuki was dead. Coupled with the fact that he had thoroughly duped Sasuke, that was how he had managed to keep doing evil under the Akatsuki's name.
But now, many of them were still alive and well. Stepping forward to reap the rewards was hardly going to be that easy.
So this gathering did not go smoothly.
Fortunately, Obito had already anticipated this situation.
After everyone had left one after another, Black Zetsu cackled. "Looks like plenty of them refuse to accept you."
"Didn't we already expect this outcome? It doesn't matter if they don't believe me. We can't let the Akatsuki fall apart just yet."
Obito was very calm. In revealing his identity as "Madara Uchiha" now, he did not expect everyone to be overwhelmed by his "commanding presence" and bow down before him.
That was simply unrealistic.
He only hoped his appearance could barely hold everyone together.
Otherwise, with Nagato dead and no one keeping them in line, plus the Five Great Nations hunting them down, they might as well disband outright.
Of course,