Yes I think there is a lot of circumstantial evidence that comes together to suggest an End times Scenario like this on the point that UFO and their inhabitants are fallen angel or demons.
1) The Christian Apologist, Hugh Ross actually has done a lot of study on that. He has a ph.d. in Astronomy, and a BA in astrophysics. But he did a lot of study of UFO's because if you are an astronomer you log a lot of time star watching in remote places, where UFO sightings typically are. He noticed a pattern that people who had lots of UFO sightings often had a background in the occult. Because he never saw one, and he had colleges that had many sightings that only spent a small fraction of the time he did star watching etc. Anyway he studied this in the US and Canada, and before the Soviet Union fell, also looked at their UFO phenomenon etc.
2) A number of people have drawn similar kind of conclusions, that UFOs are not space travelers but rather extra dimensional, "non physical" phenomenon.
Interdimensional hypothesis
3)If you look at the testimony of UFO abductees they end up being brain washed with all this new age stuff, that sounds like much of the same basic message of New Age mediums. Quite often they are preoccupied talking about Jesus, but how his message, nature etc. "is misunderstood" etc.
4) Lots of people seem to be primed to want to believe in a kind of UFO Gospel, that life was seeded here by them, and that they are benevolent beings that will save us from ourselves and lead us into enlightenment and help us build a paradise here on Earth.
5) Early Genesis concerning "the Watchers" also mirrors this kind of thing. The angelic sons of God did give the early humans various kinds of technological knowledge.
