Board Thread:Consensus Track/@comment-3279282-20171016184901/@comment-27797856-20171116185118

He didn't make a comment that "connected" it, don't twist it around. All he did is make a comment "acknowledging its existence" and the manga's connection to an anime storyline (hence the translation calling it an "anime version").

Problem with that argument is that said character is a prevalent character that fits into the current storyline, has significant impact from the anime, and is given backstory to further elaborate that we should know of the character already from somewhere (it being the anime). Raiga was just thrown in for reasons, just like Kiba. And even more so: In a flashback with no speaking role to speak of or any further development.

EDIT: Like, the only reason your argument against Raiga's arc works is that if you hadn't watched the anime, you wouldn't know of Raiga because all he is in the manga is a background character with no plot relevance or character traits to speak of. This Boruto chapter EXPECTS you to know this character, they have a speaking role and a further elaborated upon backstory that fits into the storyline we have from the anime so far.