Board Thread:Naruto Discussions/@comment-32900772-20170904113855/@comment-734582-20171012094016

Namikazenaruto9 wrote: If Absorption could solve that problem so easily why didn't kaguya use it? She knew everything their was to that seal. She was cautious enough to release them when she was absorbing their chakra... Maybe it can't, we don't know. But that wasn't my point. My point was, it was possible that Madara may absorb that ninjutsu. Without knowing the extent of their own power (they were still figuring it out), or the full extent of Madara's, they shouldn't risk a one-shot jutsu against a guy that may nullify it with ease. The intent of that attack was to restrain him first. That would make them capable of safely applying the seal and so defeating him. Just as Madara was underestimating their power (which is why he risked so much to obtained the second Rinnegan), they underestimated his.

Simply put, the existence of the risk is enough. Kaguya was so powerful that nothing they did stuck anyway, and they had no hope of restraining her. Meaning they had no hope of trying to avoid the jutsu absorbtion and so simply had to try, it was the one shot they had. It's not like they were making much ground against her since she shrugged off everything and could easily recuperate again and again. No jutsu stuck, not even Naruto's 9 biju attack. It briefly destabilized her yet she quickly regained control.

General Heed wrote: However he was basically gambling that Obito wouldn't be killed or sealed. Had Obito been unable to revive him, Madara would've most certainly been sealed by Sai at that point. I don't think he was fully restrained by the seal. I think he was simply pretending so they'd let their guard down, allowing Zetsu to hijack Obito's ninjutsu. I mean, on revival he lost his Rinnegan yet broke out of the seal as if it was nothing.

I also don't think it was much of a gamble though. Madara already had access to the second rinnegan, so BZ could always implant it in some random dude and force them to use Rinne Tensei. It's just that Obito using it would conveniently rid Madara of another problem.