1. If you have to blame "plot" or "inconsistencies" for a reasoning, then you truly have no argument. Please never try to say that to me again. That's what gets disregarded.
2. You tried to blame plot for this as well. And the bottom line you tried make was that Sasuke's ninjutsu won't work on her, contrary to the fact that ninjutsu can.
3. I will say that if Naruto could use the sealing method on his own, that he could've solo'd Kaguya right
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. Heck, he probably could've solo'd her just by targeting the neck instead. I will also say that Sasuke can do the sealing method on his own. Not only that but Sasuke has the power to at least contend with Kaguya (if he isn't outright stronger). And Current Naruto (the one who just apparently absorbed all the Nature Energy from the planet's surface) will probably match that. Overall, yes, Naruto or Sasuke could probably solo Kaguya.
4. If she couldn't react in time to absorb it, that just means she's vulnerable - hence my point that ninjutsu CAN work on her.
5. That was directed towards me. You even quoted me twice.