This film seems to indicate Ridley Scott essentially ignoring anything related to the franchise that he didn't have anything to do with. He'd disregarding the massive influence the second film had on the pop culture identity of the monster. I almost feel as though he has legit disdain for everything after the first film, much like the Engineer trying to destroy the humans at the end of Prometheus.
As I watched Alien: Covenant, the first thing I thought of was how incensed the 'canon' loyalists would be about the deviations from established concepts.
Here's what I thought of this movie, in a nutshell:
Ridley Scott wanted to take this franchise in a different direction with Prometheus. He didn't want to just do another film about movie monsters stalking victims. He wanted to try some things and make a more existential film. The ironic twist is that David, the creation of the creation, ultimately becomes the creator and unlike everyone else in the universe, finds a reason to exist when there is no real philosophical reason to exist.
"We created you because we could."-Holloway, Prometheus
Life has no meaning on its own; it's what's done with that life that infuses it with any sense of value. This makes life imperfect. It's implied that perhaps the Engineers discovered the folly in trying to create a 'perfect organism', and I truly believe that at the end of the film when the Engineer tries to kill everyone, it's not simply because it's time for the film to have an action beat (although it surely was sorely needed at that moment); this Engineer has seen how badly his people have screwed up and he intends to correct the mistake by destroying the creation, which is now creating on its own.
However, Prometheus, for all of its vast ideas, is a film whose questions are very much at odds with its clumsy execution. It's a bad film, but in the years since its release I've taken a less harsh view of it. I now enjoy its provocative ideas and intuitive direction. But i cannot forgive the characters for how dumbly they're written.
With Alien: Covenant, Ridley Scott isn't really making an Alien film. He's not even really making a Prometheus sequel. It seems to me that what's happened is that Scott took all the same fundamental ideas and principles from Prometheus and re-interpreted them within the trappings of something that looks familiar to movie audiences. To put it simply, he doesn't want to give up on his philosophical ideas so he communicates them more directly and with less required intuition.
Ironically, in order to have even a chance of liking Alien: Covenant, you have to not care about the franchise.
I liked Alien: Covenant while recognizing its many flaws, some of which have been discussed in this very thread. I'm sort of the inverse of Prometheus fans, although I've taken to appreciating that film for its strengths.
I like the concepts of this movie. They're the same concepts as expressed in Prometheus but through a different lens. By no means am I saying that Alien: Covenant is a good film. Rather, I'm saying I'm tired of Alien movies and if the creature can be used to express compelling sci-fi ideas, then I'm willing to hear them out. I felt that the creator allegories in this movie were more transparent in this film than they were in Prometheus and I liked how David was such a mad scientist about the whole thing.
If there is a real cinematic crime here, it's that Scott should have just made a new franchise. I feel that in Scott's head, Prometheus is a metaphor for going back to the origins of his 'movie life' to mine further meaning from it. But this was always going to be a square peg jammed through a round hole.