Historically what people have found creepy about robots is when they become too human-like, especially facially - the "uncanny valley" where the face is so close to human that the slight differences give the feeling that something is wrong - like a dead body brought to life, perhaps.
What's unexpected about people feeling creeped out by this new son-of-Atlas is that it seems to be because of how un-human it is (opposite of uncanny valley!) in it's ability to rotate its head and torso and perform these double-jointed types of maneuver. Maybe in a factory setting this doesn't matter, but it's relevant in terms of robots used in other settings like hospitals. Japan seem to have the right idea in terms of making robots slightly smaller than humans and with friendly faces so that they seem non-intimidating.