I mean, let's be fair: Alien has large sections of very romantic, haunting score that is not explicitly horror-oriented. I've never been able to get most of that out of my head when it comes to the franchise, it's that good. It ends on a classical piece, The Romantic, equally haunting, beautiful and emotional. It even pillages heavily from an (excellent) existing film score for John Huston's Freud (deeply underrated film, BTW).
If a franchise film did any of that today this forum would call it bargain basement, derivative and too cheap and uncreative to come up with its own material. See the double standard?