In other words, nobody (credible) is claiming that aliens or anything of the sort exist.
And unfortunately, yet more people seem to not understand -- surprisingly, in a forum such as HN -- that "things exist that we cannot yet understand" is completely normal for science and it has been since humans engaged in science as a way of understanding more about the universe.
"We don't understand this sensor data yet" is completely normal for science, it's not some shameful failure that must be covered up, the sure evidence that our models about everything are crumbling and secret 3 letter agencies must become involved to make sure Western civilization doesn't collapse.
Geez.
I do not see anyone, let alone multiple people, making that claim. Can you link to one?
Here: https://news.ycombinator.com/item?id=42160277
And you here, though disguised so you have the easy way out of claiming you were just hypthesizing: https://news.ycombinator.com/item?id=42160930
Plus, if you are going to claim the two aren't conflated in general, i.e. that most conversations about UFOs are also about ETs, then I'll peg you for a dishonest person and will have nothing further to discuss with you.
And then you call them a liar.
So you can conflate all you like, and will, but that’s your problem. There is no evidence as to the source for UAPs, interplanetary or otherwise.
I do not know what is going on, and make zero claims that I do. The one and only claim I make is that something is going on, but what that exactly is is now.
You, on the other hand, can read minds.
That’s the more fantastical claim.