Has Kotaku ever done any investigative reporting on a Japanese company? I don't think so. We only ever hear stories about Nintendo from Nintendo.
No investigative reporting required when you're just talking about the press release sent to you or the japanese twitter account. They report on any console just the same.
How one presents a rumor is important. If it is a rumor, don't present it as fact. Some people don't seem to have learned that, even after years of doing it over and over and being criticized for it. Take some humility and acknowledge past failures and that the rumors may be wrong. Don't become defensive.
When you know they're reporting on rumors, it's kinda implied that they heard something from a source and that they believe the source. The one assuming it's a fact is the reader.
When someone says "Overwatch sucks" they're not saying that the game is objectively awful, they're saying their opinion of the game is that it sucks. They don't have to waste time saying "My opinion of overwatch is that it is not very good" when saying "overwatch sucks" is the same exact thing.
Being serious for a moment, I think NX is in trouble. This doesn't feel like some new compressed marketing strategy, it has the hallmarks of a company struggling behind the scenes with a product that they feel is potentially a real clunker but is too late in development change course.
Silence does make people fear the worst, and I'm not entirely sure nintendo understands this. Or if they do, they don't care.