The author had it right up until they tried to generalize "uncanny" to equate to "loss of control". It's not the same thing. "uncanny" happens as a result of your brain not being able to dismiss a potential threat (and thus you remain on alert and can't relax fully). That's not the same thing as a loss of control.

The author also fails to go into our evolved genetic psychological makeup (which varies according to what "stock" you hail from): Certain kinds of differences are more threatening than others because survivors over time have tended to naturally find them more threatening - you see this often with the insectoid-looking holes in sliced lotus root for example.