Either Sam and reddit employees and everyone else are risking their public reputation of being trustworthy people by saying things that were obviously untrue (like "Yishan really did resign because he felt like it"), or Yishan left because he chose to.
I have a lot of respect for you, and you're not just some random person. Do you feel there's a nonzero chance we're living in a world where nobody can say the truth, and everyone chooses to play along with a social game of "Oh, yes, this is what I really believe, wink wink"? I mean, it's possible, but why believe that? Isn't the simplest explanation that Yishan didn't want the job anymore?
If this is a case where the simplest explanation is mistaken, is there any evidence?