I can accept the Xenomorphs being a bioweapon (if a poorly designed one given they don't seem to have an off switch) but I think Hawley is right on the "created half an hour ago" comment though, that does bug me, though I suppose it's possible that the Engineers created the Xenomorphs thousands of years ago and now David/the humans/blind chance is just kinda recreating them? That might be the intention all along.I think the bioweapon suits the xenomorph mainly due to xenomorph having a biomechanical aesthetic (which also matches the architect of the derelict ship) to it. I always thought of the xenomorphs being an advanced form of synthetic so I am utterly against Hawley's vision of the xenomorphs being a naturally occurring organism. Why else would all the synthetics (besides Call, Walter and Andy) have a keen interest in the xenomorphs?