How about this angle-

Engineers create man, man is good. Engineers create more advanced creations... so far so good. Engineers, due to hubris, create most efficient lifeform ever- oops it kills them.

Man creates lever, lever is good. Man creates more advanced creations (like the hot pocket)... so far so good. Man, due to hubris, creates most advanced machines ever- oops robots take over the universe.

Since the beginning, the Alien series has been about synthetic humans as much as it's been about aliens. Why is that?