I am only commenting on abductions (though abductions usually involve a craft or what would be described as a UFO).
And you are again correct in that some "aliens" are described as benign (and they might indeed be benign...or those describing them might have developed Stockholm syndrome).
Actual benign sightings are simply ones where someone describes seeing and alien, with minimal or no interaction.
Any abduction would automatically be a hostile act in any sane mindset. As for their intentions? Ultimately, who knows. I’m not a big believer in passive ETs. Life is too hostile for that to work.
I don’t know how much stock to put into alien sightings. Those are much more rare. but UFO are much harder to dismiss. Their source is a mystery, but something is flying around.
Something a pastor one said. He didn’t believe in ET, but he knew how he would respond if he met one.
Point at alien. “you need to repent, be baptized, and receive the Holy Ghost.”
Hey, if there are aliens, they may be the new evangelism.