We are cyborgs without the metal, alright. Cybernetics does not necessarily imply metal.
Humans are just robots with squishier hardware. Like Cylons. Believe it.
BTW, Ripley was never an android (technically, gynoid) IIRC. She was killed in Aliens 3 and cloned in Resurrection with Alien Queen DNA.
And don't foget the T-800 in Terminator is a cyborg. He calls himself one anyway, but mainly because he is living tissue over a metallic exoskeleton.