@Necronom 4
I agree with you 100%, except I would add that Ridley is so prone to changing his mind and Fox so keen to demand rewrites we have no idea where the story will be next time around.
But yes, according to Covenant and Ridley's wondering mind, David made them.
I can even appreciate the symmetry and philosophy of that answer, the implication of two beings incapable of procreating (David and Shaw) becoming "mother" and "father" of the Beast... but not at the expense of, in my opinion, ruining the original film and any mystery left.
Before the David scenario the Alien was an absolute unknown but seemed to get the better of the Space Jockey.
Add Prometheus and see how advanced they were, their capabilities, and even without featuring the Alien just knowing it's out tgere and these guys can't tame it made it even more threatening.
But now that's all gone.
I, for one, never wanted to know where the Alien came from or who "made" it. I think just giving it a name in throwaway dialog, Xenomorph, was bad enough. I was perfectly happy with Ridley exploring the Engineers or other creatures/species and never overtly mentioning the Alien again.
Now he's painted the mythology into a corner which just isn't very satisfying to me. If you like the David twist I'm sure it adds to your enjoyment of the films overall. But if you don't it's pretty well tainted the rest of the movies.
