1. Sakura doesn't need to maintain a genjutsu to alter her body so her consumption is lower also her chakra control minimizes her usage of chakra she also wasn't actively fighting so she didnt waste chakra on her super strength.
Tsunade doesn't use a Genjutsu for her youthful appearance. That was just a theory by Jiraiya.
Sakura's seal going back to normal in chapter 682 is a sign that she was low on chakra. Sakura couldn't replenish Shikamaru's chakra. So how the hell can she give enough chakra to travel through dimensions that eat up Kaguya's?
2.......how is that a plot whole i think its fairly logical for someone to assume that trying to go out side of your comfort zone or dimension in this case would take more energy. His MS was tailored to Kamui realm why would it be able to affect Kaguya's realm when he has shown no prior ability to travel to any other dimension but his own.
You would have a point if Obito had said just hypnotized. But he acted as if he had some experience to other people's dimensions. Not mention he didn't even try to replie on his own chakra.
3. This is actually a valid poin however Kishi made it a point during that fight to be specific when she was using her byakugan and when she was not at that point she was not actively using it but was using her third eye in order to open a portal to launch ash killing bones at Naruto when he pulled that final trick to sea her.
Her Byakugan was activated at the time.
4. While i understand you may not like Sakura that is not a plot hole, Naruto has never been one of those manga's where characters have iron skin and absurd durability. but i'll be nice, after taking a beating from Naruto and having to spend ludicrous amounts of chakra trying to pin them down so she could drain their powers and failing maybe she just was not in good condition. We all agree that Kaguya was simply powerful but not a warrior. People with more skill but less power are more than capable of beating her ex Hagoromo and Hamura, Naruto and Sasuke
Kaguya tanked a punch to the face from Six Paths Naruto in chapter 682, only leaving a tiny bruise. As well as nine tailed beast RS with one arm and low on chakra. Yet Sakura is able to make Kaguya's horn off and do more damage to her face than Naruto
right after gaining a power up.
Bullshit.
But what makes it worse is that she was using yin/yang release at the time. So she should be able to negate all ninjutsu. Sakura's "super strength" is combination of taijutsu and ninjustu. Sakura releases chakra from her fist on contact to do heavy damage, like Body Flicker does with the feet which classed as ninjutsu.
Databook states that Kaguya was the leader Otsutsuki clan. So the "she was just a princess with no skill" argument doesn't hold water anymore.
Other writing fails include:
-Kakashi and Obito running through heaving gravity when Naruto and Kaguya couldn't.
-Obito coming back from the dead.
-Kaguya not knocking Naruto and Sasuke alway with her chakra arms before getting sealed.