"the recent revelations (before Congress, under oath) of top secret intelligence insider David Grusch"
I am not at all impressed by Grusch's "revelations". I would gladly bet that he is an out-and-out fabulist, having the time of his life making fools of politicians (and the public). And there is a limitless store of other fabulists waiting to join in the fun.
"I'm from MO, show me." Or get lost.