I can't pressure him as much if we talk in private, which is why I spoke to him in Japanese, putting on public pressure. I also told him to send me a private message if he doesn't want to talk in public. In which he didn't, he only replied to my English comment. Which was my first reply on this matter and the notice box should have my Japanese reply higher. Which makes me think he chose to ignore it, either because he doesn't want to reply to it, or cannot speak Japanese.
But he did reply to my English comment, so he should have no problem replying in Japanese, if he understood it that is.
a counter-point, roberto ferrari confirmed gentiana was an informant between Niflheim and Stella, in fact in the storyboards you can see her interacting with Gentiana, Ravus and talking with Noctis on the phone; seems to me she had some kind of active role in the real-world.
of course, giving the project faced many rewrites is it possible that different versions of the script contradict each other.
the talk about Stella being dead and Noctis having dreams and hallucinations about her was touched upon by OfLucii too, which confirmed Umbra's human form.