Yes, I really, really don't like that narrative for the hijacking.
It's especially nonsensical because the government did NOT want to be paying for airline security. The government wanted it to be the responsibility of the individual airlines to pay for additional security measures. So, saying the deep state was involved is silly to me because they had no incentive. This was a clever bank robbery, that's all.
That said, I think there is a very, very real possibility that Cooper was CIA adjacent at some point in his life, likely through Air America. He fits the mold very well of their middle aged renegade pilots who flew in Vietnam. As I said in the show, I came across a news article from 1972 where a guy said the average age of Air America pilots was 43 years old. These guys were mercenaries. They risked their lives for profit. So, Cooper would have been used to this sort of dangerous game.
The fact that Air America dropped men and material out of 727's with 15 degree flaps and gear down is almost too coincidental to believe.