Hmm i dont know, he has a point.
Take the stealth bomber, they kep it secret for 20 years or so.
Manipulating the weather is also possible, one of the methods they use is Cloud Seeding.
No one believes it is real, but you can just look up the de-classified documents about past expiriments.
So yeah i cannot say he is right, but i can also not say he is wrong.
Military industrial complex is ahead of the most companies.
And they collaborate with Companies and al discoveries during the contract wil be kept secret most of the times.
This is nothing new, its not even a conspiracy.
Just the normal way governments and military operate.
We might never know, or maybe in another 50 years there wil be new De-classified documents.
Have a nice day!