[DocTomoe]

That's the other side of anthropomorphic robots: they get anthropomorphic attributes associated with them. A 4 axis robot arm hitting a worker is a machinery with bad safety settings and/or a worker who ignored them. A humanoid robot hitting a worker looks a lot like another worker hitting a worker.

Also take into account that these humanoid robots are specifically designed to integrate into spaces which usually were not used by robots before, which immediately means more potential contact between them and non-trained personnel, even civilians.

I feel we are quickly approaching ST:TNG "The Measure of a Man" territory here: At what point does a machine stop being a machine and becomes a being, a strange, technological being, sure, but a being nonetheless. After all, there's a good argument to be made that we are essentially biological robots.