Aliens are demonic, I have no doubt. There have been decades of calculated "disclosure/leaks" regarding aliens. They aren't hiding anything. Rather, giving a little more narrative of the inevitable threat or more than likely, "salvation" coming from alien life. Just look at the Vatican for proof of warming to aliens.
On top of this, demons, the Devil and hell are not being taught as much in churches. It has become taboo to mention any evil in the Bible, despite the clear warnings and depictions in scripture. It is now PC to ignore all the justice in the Bible in lieu of new age peace and love. That's not to say that God isn't love, He is. Without justice, however, love has little value to a sinful world.
For most, this topic is too far out there to discuss. For others, it is much easier to believe in aliens than demons.