I read the entire story online, & have volumes 1-7, though I have yet to read 6 & 7. I agree with Laughing Dragon that making robots physically indistinguishable from humans seems a bit strange, except that their creators would do it just to see if it was possible. Making them that human-like for commercial or consumer purposes does seem weird. Although there were scanners that could tell the difference, except in Atom's case, does little to reassure the public. Dick's novel, Do Androids Dream of Electric Sheep
(Bladerunner) depicts a world in which the only androids are those that have escaped from bondage on other planets. Though they are physically similar to humans, they lack empathy. But humans would still fear them; hence, the android hunters.
Asimov's fiction (Caves of Steel), also had robots all but banned from earth; R. Daneel Olivaw, though he resembled a man, he lacked human-like behavior. In Naked Sun
Earthmen feared robots, and had a "Frankenstein complex." There was a Ban on use of robots on inhabited worlds in the story Evidence
. Bicentennial Man
asked whether humans could have robots as friends.
(robots) resemble humans but for their ears. I suppose that there are plenty of other stories that deal with this. I need to reread Pluto
in its entirety to really get the whole picture, but it seems that there is clear discrimination against robots; there is plentiful precedent in Atom's stories for this. Tezuka used robots as metaphors for the lower classes of humans. I am still working on an Astroboy book, but it will be quite a while.