I've only recently started reading the Alien Covenant novel..to my eternal shame as a friend gave it to me for Xmas..
Watched the film only once..Prometheus twice, but i'm still really struggling with the concept of David creating the Xenomorph..
I think Dropship put it best:
'I loved the original jockey concept too, Gigers work on movie was amazing, fossilised and been there for many years, and I can't see how Scott would turn this around to be honest, too many lose ends so to speak'
It's just not sitting right with me at all, even after watching numerous YT videos explaining origins of the black goo..withdrawn script etc.
I'm currently of the mindset the 2 prequel movies so far, hadn't been attempted, as they've left me with far more questions than answers...