The ALIEN franchise more than other franchises is true anthology. So it might polarize fans who like one or two of the films (aka genres) but not others. In this metaphor fans are blindfolded & standing in front of different parts of the (franchise) elephant bsky.app/profile/tiff...
Generally when someone likes or doesn't like an Alien entry (Romulus last year, Alien Earth this year) it's helped when I hear which Alien films they loved over others
I love all of the Alien franchise's huge swings. The one I like least is Prometheus - mainly because that was a film trend at the time where everyone wanted everythingcore prequel/sequel mutants. I also didn't love the Calvinball lore. (Miraculously and masterfully incorporated by Alien: Romulus)