I would personally think he is full of it. It is very unlikely IMO that someone who "blow the whistle" on reddit. It is just not the kind of forum that you can easily show proof. It would be much more effective if he were to go to congress or go to the MSM who could verify his story but keep his identity private.
Yeah why not use wikileaks?
Possibly, but you could argue that Reddit is the right place to talk to a bitcoin audience (you could also argue that Reddit is the best place to spread a made up story, so hard to know).
I really want to believe this, but it is hard not to be skeptical. The broader support you can claim for the story is that: the Fed governor and her predecessor have both made good noises about bitcoin which proves they are looking at it; and it is believable that the Fed would commission a serious study of bitcoin's potential given it is the Fed's job to stay on top of the financial system (whether they do that well or not I will leave to others to decide).