Ask HN: How do you view Edgar Mitchell's claim of disinformation?

Mitchell claims[1] that there is a "clandestine group", affiliated with government, also quasi-private responsible for controlling information about possible "ET". He says that a craft was recovered and that "weather balloons" at Roswell was simply disinformation, i.e., falsehood deliberately released to confuse and conceal the truth.

How do you view his claims?

[1]: https://www.youtube.com/watch?v=LOHv1twCOqQ