Most people don’t realize that ANYTHING the government produces as far as technology is at least 10 years behind the latest technology.
Its due to the huge bureaucratic pile of regulations, paperwork, delays in funding, and all other factors that turn any governmental technical procurement into a “turtle.”
Most importantly, palms must be properly “greased” before any final action is taken.
You are correct only in so much as the stuff that is known. From my experience as a member of the crypto team at the Electronic Proving Grounds from 74-76, I can tell you that in that time, we were way beyond what was known to the public.