Actually your assumption is an old theory among some Ufologists and Ancient Astronaut Theorists. I believe there's a possibility that these beings exist. I also believe there could be a full disclosure of them and UFOs from the government during my lifetime (as I explained in my OP).
U.F.O.s like you see in videos, and like the ones I've seen, disappear instantly when the name Jesus appears. These beings are what I call, "the enemy." I am still dealing with the effects of these things interfering in my younger life.
I've had encounters where I had missing time, I've woke up in the middle of the night, paralyzed with fear and only saved when the name Jesus dropped into my head.
When Yeshua delivered me and allowed me to feel His power, I no longer feared them. I do, however, dislike them and the things they do. Like, deceive people into thinking they are something other than what they are. Fallen angels and demons. I'm stating fact.
I'm not trying to argue. But whenever the topic comes up and the truth needs to be spoken, I speak up. These are powerful, intelligent, and malignant beings. The truth is we are surrounded by them. They move between realms.
As a maturing disciple of Christ, I will confront these things whenever led to do so. The Bible, and more so the book of Enoch, describe what these beings really are. They are God's enemies and as such, are mine also. They are seething with hatred for the body of Christ and the redeemed of Israel.
I found a picture of a cat-headed woman on the media forum. I don't recall the name of it. It is described as being an ancient god. It is not so obvious because the picture one sees has the head missing. Click on the headless picture and you will see a Nephilim. I see it as a high place on this forum.
Since my ancestors were kicked out of the promised land, and rightly so, by God for worshipping these things and are only now being restored, after 2,800 years, I know what God thinks of them.
Could God have legit life on other planets? Sure, but since He doesn't tell me about such things, I don't know. But for sure there is a reason He created the universe. All signs of life in our solar system point back to the fall of Lucifer, Enoch, and Genesis 6.
Take it or leave it. Shalom.