I’d disagree and say that it demonstrates its flaws (as the author of the linked post says also). But there is no reason to think that it meaningless that Janeway doesn’t talk to other women about something other than a man.
That’s a fact, in some episodes, with some meaning independent of whether the episode otherwise has plenty of dialogue delivered by its female lead. Would a TOS episode have ever failed the reverse bechdel test? No, Kirk had plenty of men to talk to and did so about many things other than women. Why not Janeway? Because the show, in many episodes, surrounded her with men. Paris, Harry, Chakotay and Tuvok surround her on the bridge, while Kes, B’Elanna and Seven are often “downstairs”. The test surfaces these aspects of the show, if you think about it for a moment … and I don’t think that’s a failure of the test at all.