Given that he describes it as "Hello World attached to a random number generator" - quite possibly so. But it became meaningly profitable due to the design iteration and statistical marketing that followed, not to mention familiarity with its mostly nontechnical audience.
Certainly, and that's why patio11 has done as well as he has. But it's an easy example of why web startups aimed at a nontechnical audience can succeed even without being terribly complex, and is a supporting point for the idea that some startups can probably succeed without a "rock star" developer.
