True, also what Christians might call angels could appear to be aliens from another planet too. It’s not a test of faith.
As to the main topic, if no aliens or their technology have visited earth, then what will they eventually uncover at Skinwalker Ranch where some mysterious object appears to be buried under a mesa near the ranch?
This is a subject where a negative (there are probably no aliens) is inconclusive and a positive (here’s an alien) is conclusive, much like saying Biden could be an agent of a foreign government, saying he “probably” isn’t is inconclusive but proving he is (caught in the act) would be conclusive.
UFOs are a convenient distraction the government trots out whenever they need to distract the publics attention from something they wish to hide.