Not relevant to the article.

Also, that study is extremely dubious/barring on fan-fiction.

Homer (if he was even a person) recited oral epic poetry (that we've lost most of) and we've written down an extremely lossy version of it.

Why should we take any of the mythical character's interactions with mythical gods as any insight for the brains of real humans???

It'd be like year 4000 historians citing World of Warcraft claiming the Lich King is a very obvious example that humans lack an internal monologue because he was not able to distinguish his own motives/actions between Ner'zhul/Arthas (both spiritual entities inhabiting the "Lich King" body).