the whole "Deckard's a replicant thing" is lame because it ruins his character arc if he is. IMO the whole film is a comparison of the human Deckard who coldly murders replicants without mercy (like a machine) vs the replicant Roy who kills with passion, and eventually grants mercy to his enemy. The replicant is "more human than human", and the human is more machine-like than the machine. Deckard's story is going from a robot-man to someone who actually feels alive and concern for someone other than himself at the end.
I absolutely agree with you. But I did feel like it let me have my cake and eat it, too. It had a Thing-like quality- if what makes someone human is so ephemeral, that anyone could be a replicant... it added a quality for me.
I felt like we were meant to sympathize with Deckard. I certainly did, and I was a little girl when I first saw it! And when those same questions came turning back toward the person who was standing in for the audience, it really drove that point home, that in this world, even I could be a replicant. And at what point, then, did I have the right to arbitrate what is and is not life?
I love it both ways. But I am both extremely indecisive and bisexual so I guess this is no surprise.
I don't think it was ever said that she was half-human, was it? The remarkable thing was that she was born to a replicant parent, but that could well have been two replicant parents. 2049 never stated a position on the matter as far as I can remember