Originally posted by Darkstorm Zero
No, his entire premise was that the Sage wedded a Hyuuga Wife. He said nothing about Kaguya, because she was not even thought of 2 years ago.Besides, there is no evidence Kaguya is a Hyuuga either. She came from a distant land "outside" the Elemental Nations, and there was no other information regarding her history or bloodlines or ancestry or anything else.
If SWL had said that the Byakugan predated the Sage or the Rinnegan, then he would have been correct, as it stands, no, SWL is still incorrect.
I didn't read the OP, only the title which says: "The Hyuga Clan predated Rikidou Sennin" which is partially true: it was just the byakugan that predated the Great Sage.