I don't think we have all the tools on sound science.
I have read about military applications of sound advancements, like being able to point and place sounds/voices into victims heads.
Or military use for weaponizing.
Technology has advanced in all areas since the 70s and I don't see why it would not in all areas.
Think about it. Our military planes shown to us are about 20yrs old, before use of cellphones.
Then people wonder why they spot unusual activity in sky..
It is us all along.
I don't follow your logic. Just because you are not aware of advancements in audio and sound, doesn't mean that every one else is just as uninformed.
For example, the trick of hearing voices in your head is a pretty cool technology, but it's not magic and it's not restricted to military. You too can learn how it works if you just do a little reading