Board Thread:Episode Discussions/@comment-1181222-20170712100345/@comment-5085906-20170713205618

Ravenlot 27 wrote: Actually, one of the problems I see is the thing that Momo/Kin didn't actually seem to be loyal to the Ootsutsuki main clan the same way as Kaguya wasn't. I mean, they were harvesting chakra fruits only for their own benefit and all alone (maybe, except for the third Ootsutsuki, the presumed Kinshiki guardian whom the latter absorbed); in the episode itself, they seemingly decided to ignore the clan's law. At the same time, could be the case that's the tradition of the clan to work on their own benefit, but if we tread the things that way, I don't see any sense in Kaguya's presumed "betrayal" of the clan, since it implies that all the Ootsutsuki have some common goal and are cooperating together. I think we're gonna get to see three slightly different versions of the duo, what with the slightly different path that the anime seems to be taking. First one was movie Otsutsuki whose main purpose was to provide a counter to the shinobi's philosophy regarding hard work and perseverance and make Boruto snap out of it by highlighting the similarities that he shared with him. The manga version added a weak family dynamic between him and Kinshiki and the whole branding Boruto with what seems like a curse mark. This was sorta weird as up until then, Momoshiki was portrayed as a Disney villain with no complex personality feats whatsoever. It was out of character for him to give Boruto extra power. So, I think - rather, I hope - that the anime will explain their motivation in depth and maybe even provide more context regarding the Otsutsuki Clan and what they do exactly.

That'll probably explain why they consider Kaguya to be a traitor.