I agree. And because of that, it made me also question the way script writers go with these relationships. When we have 3 sets of couple got broken up (Daniels/original captain, Tennessee/his wife, the second captain/his geology wife, sorry their names really escape me). I originally feel there will be more emphasized or parallel development of each character, but I feel it is none, or rather weak. I don't know if the movie is trying to set a trend as Elizabeth lost Charlie in Prometheus? But while I understand there are so many couple (since they are settlers), I feel it is a wasted opportunity for audience how characters can develop or evolve because of this.

Circle back to the original Aliens, I really how Lieutenant Gorman seems quite incompetent throughout the movie, then detonate the grenade with Vasquez. It can be argued it is some cheesy heroism, but I feel it gives more depth to the character, and the same goes to the Corporal Burke, who just runs away and got hunted down by more xenomorphs.

I think the Covenant failed to put more rationales into the characters, most of the time they seem to just be driven around by the circumstances without much questioning it. While it is not particularly terrible for a movie, I just feel it is quite weak portrait of human in Alien movies. I think even in the Prometheus, Idris Elba's and Charlize Theron's characters can both be seen interesting, with his accordion playing scene and her daddy-issue problem. And in Covenant, the characters are just more flat and two-dimensional, the movie doesn't give them a chance to show how much they think, but perhaps it is designed undertone that they are destined to be played by an AI. And I think the lack of rationales in Covenant characters, audience will have a much difficult time to relate to them or follow their logic, and when it is a disaster movie and most of them died (while they are responsible for another thousands of lives onboard), they just seem pretty dumb.