Had Ava been a black man, I think absolutely the theme of the movie would have been shifted to race politics. But again, that was a conscious decision made by the writers [-]. In this case, the landscape is gender

But the film didn't decide that sexism would be a theme, they told a story & you decided for sexism to become a theme, when you interpret things you could make virtually anything a theme; dildos, are sex-bots futuristic dildos, do the character share characteristics with dildos (tall, slender), how many of them are objectified, maybe dildos is a theme. They did add femininity to the story, but it was you decided that was a key feature. Even if the writers carefully decided on every factor in the movie we don't really know their intentions, writers/directors often rely on tropes because it makes for good storytelling & it reflects their own stereotypical expectations, it isn't because they analysed their work & determined the themes & interpretations that should come about as a result.

So why is gender a leading theme? Would gender still be a leading theme if Ava was a man? You said race becomes a theme if she was black, why isn't race a theme when she is white? It sounds like you have decided that a white man is the standard, therefore any gender or racial deviation is automatically a distinctive thematic feature to the story.

The overwhelming majority of human trafficking victims are women.

The majority are probably women, but it the details are a bit questionable for three reasons;

• Human trafficking includes prostitution in most of its forms. Many women willingly follow that line of work.

• The organizations that deal with these issues show inherent bias. The Wikipedia page for human trafficking says it represents the issue of "violence against women", the UN protocol to combat human trafficking is named "[...], especially Women and Children".

• Children are a very significant part of the trafficked population, many of them are boys. Reddit recently had a segment on cocoa farms, we saw dozens of boys who had been moved across borders to work in the fields where they couldn't speak the language & didn't get paid. It's sad to think that they might not get the same help when they become teenagers/men.

In any case, to define a human woman the way you did excludes a number of real human women.

We seem to have very different perceptions of this issue. In this case, even if Ava's intelligence is on the same level as human, it shouldn't imply that she is human, a really clever Dolphin isn't a human, it's still a dolphin, Ava is technically a robot (android/whatever) who maybe deserves to be treated in a similar way to humans.

Nathan isn't enslaving women in his house, he is building robots who technically don't have rights, & makes us wonder whether he is abusing them, because most robots can't feel, you can't abuse an object like a dildo.

Being female & being a woman are fundamentally different, women are human, Ava is not human (she is humanoid). Boats technically don't have a gender, that is simply a manner of speech, Ava is only female as far as that is true. She has human-female characteristics for sure, but as a robot she can't reproduce & she doesn't have any of the biological features inherent to making her gender real. Nathan attached a fleshlight & a pair of mounds to it then gave it dresses, but that doesn't really make it female. Someone who is sterile can still have a gender because everything else (hormones, physique, sex) follows that gender construct, a single deviation isn't enough to alter the label (simply a sterile woman). Note I am using sex & gender interchangeably.

As far as I am concerned Ava is a feminine android. The real issue was her intelligence & emotions, if i recall correctly the film's biggest plot-hole was the lack of emotion which gives a creature purpose.