What "powerful internal investigative" bodies and news media has is EXPLOSIVE REPORTING of bupkis. But very highfalutin bupkis.
There comes a point in a poker game where "put up or shut up" show your handm ante up or fold ends that game. This UFO game has gone on how long now?
Bupkis.
This whistleblower (whistleblower is inaccurate in this case because he got the approval of The Defense Office of Prepublication and Security Review) has already made his presentation to the classified committees of Congress.
As an aside, I don't think anyone of substance has drawn a conclusion one way or another re: these allegations. The DOD has denied their accuracy and NASA has denied any knowledge of such programs.
Right now all we have are some potentially earth-shattering claims on one hand and some vehement denials on the other.
As some on this thread have said, the jury will be out until something substantial (if not absolute proof) is delivered to the public.
Some have said that the "drip, drip, drip" of disclosure just turned into a spurt.
I agree it is time to “hold them or fold them”.
I think the guy has four aces—but we will know soon enough.