An animation studio will do whatever they want even if it breaks continuity or not. This is so obvious with Naruto fillers as it is with Boruto and Kishimoto throwing in some ideas means nothing, we don't even know what it was, so the burden of proof is on you.
Contradict the Manga, contradict the Databook with proper evidence. A translated interview by some fan means nothing. It is not even the fan translating, it is how one can take this claim posted on the internet and take it for granted but one can't expect you to understand this.
what is next? Indra invented the Chidori?
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