I am keeping an open mind, but so far there is nothing that would eliminate the possibility that they fit the Biblical narrative of Ephesians 6:12. (and the "Prince of the Power of the Air" description of you know who)
Other people who have insider knowledge have said the same thing. John Lear and William Cooper come to mind.
That does not necessarily make them demons or fallen angels. People are exactly the same. Just look at the behavior of liberals right now. They appear demon possessed. People I encounter here on FR are often nasty. Just because people come from "out there" and possess higher technology would they be any nicer than run of the mill people.