I love that movie. I've watched it more than once.
There is a profound question in your comment and in the movie. What is it to be human? How did we come to be? Do we have an essential nature? Can a machine be human? How do we cross that threshold?
Bladerunner follows the theme further. An android mates with a human. That's one way of crossing the threshold...although that raises another series of questions.
Years ago I read a book by Miguel de Unamumo, (I think in English it's called The Cloud) in which the main character learns he is not 'real' but is in a novel. His life is controlled by the author. This theme has been repeated in other places. Is he real because he thinks he's real? Is he human?
So, I don't know if a robot can cross the threshold of being human. If not, then no matter how skilled that robot, I'm not interested in its creation. I think art is about humans communicating with each other. We are eusocial. Can a robot be human enough to be part of our eusocial community? I guess it's possible.
Anyway, as you say, we're not there yet :))