>Source

Well you know, the [entire](/https://64.media.tumblr.com/d81c24be2b16cede61bb33230d690e7e/tumblr_inline_np2ywqQtPA1toi3fr_1280.jpg) setup for Boruto. 

>She is lower ranking 

She is lower ranking than Isshiki LOL the same dude who’d literally No-Diff Kinshiki, and someone who she nearly killed (surprise attack granted) even before eating the chakra fruit. She was to Isshiki what Kinshiki is to Momoshiki, that scales her at bare minimum on the same level as Kinishiki Pre-Fruit but arguably even stronger. 

>Weakest chakra fruit 

Yeah no.

>Ten Tails narratively are way weaker than the Otsutsuki themselves 

Yeah no. 

>Can you prove BE Darui and BE Gaara are below Kaguya? 

Are you asking me if I can prove that Gaara and Darui are below the person who had both their chakra along with nearly the entire worlds and the Otsutsuki genetics? What are you smoking dude? Gaara isn’t going to go from getting No-Diffd by Madara to being stronger than him just because he grew up (with no conflict), both Darui and Gaara both still get destroyed even by EMS Madara.  

>Another planet 

Everything you just listed Momoshiki doing is either taken out of context or irrelevant. What happened in another planet or universe means nothing when on Kaguyas earth they start running the second they get confronted by a kage. Evidently the Naruto/Boruto earth is leagues ahead of anything Momoshiki, or Isshiki, have encountered beforehand.