One problem is that we haven't gotten a "UAP Snowden". Such a person has seen a serious chilling effect.
Note that my post was designed to be agnostic. Leaking a psy-op, or leaking the extensive, close-up details of UAP phenomena which we do have (president Obama himself said there are confirmed unknown phenomena, taking him at his word on this topic), is still a Snowden style leak, especially if they continue to do this dog and pony show in congress and elsewhere.
There's also not a nuclear physics Snowden, or F-47 Snowden, do you think there's nothing to leak?
There might be, but even if there was, a leak in those fields would still have no bearing on whether or not there are actual things to leak regarding UAPs.
Maybe the info is simply not public because publishing it would let the very likely other humans responsible for said UAPs know that we do and don't know what they're up to.
And it could also be that that info on UAPs isn't leaked because (unlike the Snowden leaks), they aren't actually relevant to Americans and to their liberties, and so the people who have access to that info see no point in leaking it.
These phenomena have been documented, in-depth, for many, many decades. Credible sources note that certain materials and devices (I don't want to use the term 'craft') have been in government possession for going on 90 years, since the end of WW2. The notion that some country had achieved technical supremacy such that we still find their technology unidentifiable for 90 years isn't tenable.
Everyone involved in what the public knows about this are largely credible people who have undergone a classification briefing of what information they have, carefully vetting what they're able to share. They seem to feel that this topic is relevant to Americans and their civil liberties, they simply don't want to go to jail. I would tend to agree with these people.
Now, the government can actually just say whatever Dave Grusch knows about these entities can be declassified. Just say, "Dave is not bound by classification for any claims relating to contact with entities, deals with entities, specific information about entities, etc." This would instantly discredit his claims, because he'd be free to make outlandish and absurd claims without being able to hide behind the veil of "it's classified, we have to discuss this in a SCIF".
If they don't exist, what's the problem? This is a man we know was at the highest levels of the actual stuff he's talking about. He's a credible source. If he's making outlandish claims, just lift the veil of secrecy.
Of course they don't do that because it is classified.
So, by one POTUS admitting that we don't already know everything about everything, that proves aliens are here and they look like little grayskinned ET's?
Except there is no "logic" to thinking a leak just hasn't happened "yet".
There's no "logic" to thinking that the absence of a leak implies there is information to be leaked.