The word "alien" works in this context but, as the previous commenter mentioned, it also carries the implication of foreign origin. You could use "uncanny" instead. Maybe that's less arbitrary and more specific to these examples.
"Alien" still works, but then you might have to add all the context at length, as you've done in this last comment.
Hype people do this all the time - take a word that has a particular meaning in a narrow context and move it to a broader context where people will give it a sexier meaning.
"Alien" still works, but then you might have to add all the context at length, as you've done in this last comment.