Same Tobirama had a literal Uchiha on his team, and Shisui, Itachi, and ESPECIALLY Sarada’s are proof that hatred is not the sole power of an Uchiha, and not all fall into the darkness of Hatred.
He also gave the Uchiha the role of Village protectors by making them the village police, and really what cause the entire Uchiha clan to rebel against The Village was Danzo and the other two Elders that took advantage of Hiruzen and forced the Uchiha to move further and further away from the Village. It was Zetsu and Danzo that caused the inevitable destruction of The Uchiha.
So he was both wrong and right about them.