I haven't watched the video yet. But I will say this: Freddy Silva, one of the few really legitimate crop circle researchers has pictures in his website showing the alien face crop circle under construction.
None of the really authentic crop circles with Dna changes and electro magnetic anomalies have ever been caught in the act.
Silva's theory is that the Intelligence Community--specifically British and US-- are preparing the public for the biggest psyops ever--the invasion from outer space.
He also believes that there may be a struggle going on in the elite so that is why some "classified" information has been encoded in these crop circles. The real information is mixed in with the disinfo, as usual.
Silva claims that starting in about 2001,numerous crop circles were formed by human agencies using micro wave technology.
These formations are highly complex and couldn't have been done manually but once you understand how they are done you can find signs pointing to micro wave.
If you go to his website and read into the year by year "diary" of crop circles, you can find this information.
It isn't displayed prominently on his website.