I agree with what you're saying because we have indeed seen a large increase in UFOs and these types of paranormal stories especially in the last 10 years compared to ... say ... 10,000 years ago when we have the first depictions of UFOs in caves by prehistoric men.
Maybe they've always been here but since people didn't have cameras and fast methods of communication back then (Phone or the Internet) the stories didn't spread.
But now that everyone on the planet has a camera in their hands, we see more and more weird stuff.
As someone who believes and loves miracles from God, i can certainly understand the evil spirts in play too.
For example, there is a multi-series special on History Channel called the Skinwalker Ranch which is littered with UFOs and bad spirts in that ranch/area. People who worked on the show, left because they had bad dreams or some of them developed skin burns out of thin air when they entered un-holy rooms in that ranch. So, the evil force is there.
With all this being said, maybe just maybe, there could be other intelligent beings out there similar like us and maybe they are looking for God too, so we have an opportunity to tell them about Jesus Christ .... if they decide to show up. But i doubt it.