Different levels of strength led to entirely different perspectives, and thus entirely different attitudes toward these experimental subjects. Shinji and Amado were a perfect example of that.
What Amado saw as a tremendous threat, Shinji viewed as a treasure trove whose benefits outweighed its drawbacks—a mine that could be continuously excavated and a treasure that could be endlessly studied!
If time had allowed, Shinji would actually have favored Amado's conservative strategy as well. But the situation no longer allowed him to be cautious.
As for purifying the Chakra within these experimental subjects and removing the remnants of Otsutsuki Shibai's will, Shinji had tried it in secret and discovered that he was the only one in the entire Shinobi World with the ability to do so as a Kekkei Mōra user. Everyone else—even powerful individuals like Toneri, Karin, Guang, and Shion—was unable to avoid being influenced by Otsutsuki Shibai's will within the Chakra.
Therefore, if they wanted to use Guang's 'Yachihoko' to control the ever-growing population of experimental subjects, efficiently purifying the Chakra was a problem Shinji had to face.
Land of Hot Water.
The research at the Research Institute was advancing rapidly every day, with multiple groups working in parallel. During this past month, Obito had not been idle either as he remained in the dark underground cavern beneath the Land of Hot Water. Relying on the Eternal Mangekyō Sharingan that Shinji had deliberately left him—the pair whose Dojutsu had reached its peak—as well as the White Zetsu Cells containing Sasuke's Chakra that the Research Institute had prepared specifically for him, he had finally succeeded in awakening his own Rinnegan!
After tearing off the bandages from his face, Obito slowly opened his eyes.
Looking at the faintly purple Rinnegan in Obito's eye sockets, White Zetsu said excitedly, "I knew you