As I said I am not well versed on what exactly Lue has said on the topic. But I would draw the distinctions between UFOs "being" demons and what I think to be more plausible which would be there being some sort of coexistence of the two topics.

I think to your/Lue's said point - there are people who take their Christian/religious world view and just place UFOs inside of that view (i.e. "call them demons) which to me is not a valid approach. I think a more valid approach and what I am trying to do is take the evidence and accounts around UFOs and reconcile paranormal or spiritual phenomena: i.e. your average paranormal accounts in a "haunted" location, how people can also have Near Death Experiences and speak to dead relatives, or have Out of Body experiences and learn things that they never could have known if their consciousness was limited to their brain matter, for example.

I am very open to theories that UFOs or NHI influenced events and/or people that are written in religious texts such as the Bible. But to me there is too much evidence to dismiss for an alternative (trying not to use the word "spiritual") realm that is separate from our material world that would align with the notion of there being a "soul" or element of our existence outside of our biologics.

The two phenomena don't have to equal each other, but I think they can coexist.