A common response in the recent LessWrong threads about UFO's is rationalists immediately going into a state of wanting to translate the news into probabilities of the existence of aliens instead of taking the facts for what they are and thinking about what should happen based on the revealed facts.
According to Ross Coulthart, David Grusch gave the ICIG, Congress and the Senate, the location where the vehicles are stored and the names of the people who control access to those programs.
While I would like to know whether or not aliens visited earth, I think it's more useful to simply take the stance "I don't know" instead of thinking in terms of probability.
From the "I don't know"-stance, the next step is obvious: There need to be congressional hearings where the people who were named has being in control of access to those programs get asked in public about the nature of those programs.
Given that there seem to be powerful people in the intelligence community who want to block public exposure of whatever the nature of those programs are, it's important that there's public pressure on Congress to investigate and hold public hearings that go into the details.
The mental moves of directly rounding down to "my priors against aliens are high" -> "no aliens" -> "no need to do anything" is bad as if enough people hold it we won't get more evidence.
Extraordinary clams require extraordinary evidence. Words are not extraordinary evidence, they are just words. Sworn testimonies, documents, blurry images... They are not extraordinary evidence.
Until and unless something like this surfaces:
"here is a sketch of the propulsion system they used, and this is all totally new and revolutionary" or
"here is a radiation shielding material that is leaps and bounds ahead of our material science" or
"here is a sample of their tissues, it converts energy into matter in ways we never conceived of"
I will keep calling BS on just words.
Michio Kaku is a crackpot who used to be a physicist decades ago, so pay no attention to whatever he says these days. See the latest Scott Aaronson's piece.
I am not sure what your point is. If there are no aliens, there is nothing to report. If there are aliens, what matters is the proof that is not words.