As the article stated, the designs are to satisfy the quirky and inventive taste of the Japanese.
Article title:
Fearing Crime, Japanese Wear the Hiding Place
Caption of the above picture:
Though street crime is relatively low in Japan, quirky camouflage designs like this vending-machine dress are being offered to an increasingly anxious public to hide from would-be assailants.
From the article:
These elaborate defenses are coming at a time when crime rates are actually declining in Japan. But the Japanese, sensitive to the slightest signs of social fraying, say they feel growing anxiety about safety, fanned by sensationalist news media.
While Americans want to protect themselves from criminals, or even strike back, the creators say many Japanese favor camouflage and deception, reflecting a culture that abhors self-assertion, even in self-defense.
“It is just easier for Japanese to hide,” Ms. Tsukioka said. “Making a scene would be too embarrassing.” She said her vending machine disguise was inspired by a trick used by the ancient ninja, who cloaked themselves in black blankets at night.
(all emphasis mine)
This must be the passage you were referring to:
However, the fact that they were greeted here with straight faces, or even appeared at all, underscores another, less appreciated facet of Japanese society: its fondness for oddball ideas and inventions.
Some other "oddball inventions" with this sort of purpose in mind:
A pair of women’s sunglasses has wraparound lenses so dark no one can see where the wearer is looking. These are intended to scare off sexual harassers on Tokyo’s crowded trains, where the groping of women is a constant problem.
For children, she has a backpack that transforms into a Japanese-style fire hydrant, hiding the child. The “manhole bag” was also her idea.
Gotta love how you can read an entire article, and only come away with the
one sentence that supports your preconceptions. Amazing blinder-fu.