Notably, Sam/Greg do not guess or insinuate why he did a coup.
I think the Reddit user is legitimate.
Im not saying that real leaks dont happen, but that pre-running the news is really weak evidence the on reddit, unless the claims are incredibly specific.
I dont think there was anything they said on reddit that was very specific, and several posters in the HN thread speculating the same thing, just without claiming to be "in the room".
It is kind of like publishing multiple weather predictions, and then claiming credit for the one that is correct.