That is interesting... I read that article or one similar to it when I first got OmaKitty and she was afraid of her own shadow. It took me about 2 years plus a year of "kitty psychotherapy" with a behaviorist to get her to a point where she seems content and not afraid - at least in the house.
Every room in our house has what I call an "Oma Safe Box". It's a simple but complex design I created where, essentially, there's a cardboard box nailed to the wall then taped up. I cut a small hole in the side of the box so when she looks out, she can't be "seen" from straight ahead. When something frightens her, she will run to a box or into the closet in our bedroom where she's got her own little condo I made for her to hide in.
I'm well aware of how much you worry when you have a fearful animal. The one thing I learned from the behaviorist which I've used all through Cooper's training and dealing with OmaKitty's outbursts is "ignorance is bliss". If they don't see you freaking out about them freaking out, they'll most likely stop.