They are top secret craft flown by the US. Whenever the gov’t releases top secret craft information it is usually 25 years or longer after they were first developed. Look what stealth echnology was devloped back in the early 70’s.
If aliens were on Earth tens of thousands of people would have been in the loop over the the last 70 years. From the highest person to the lowliest security guard. No one has spilled the beans? No one has come out with credible alien info yet.
“No one has come out with credible alien info yet.”
Your definition of “credible” may be the issue here.
I find the data very credible.
It is in the eye of the beholder.
https://podbay.fm/p/aliens-and-artists/e/1645119331
Given total disregard for credible witnesses, you have a great theory.