Clickbait title. It's as much superhuman as you can call pretty much anything done on computer and as it's admitted in previous to last paragraph in the article it doesn't even use reinforcement learning.
The motivation here was to expose most people who probably haven't heard of RL concepts like rewards, Markov decision processes, etc to the ideas. Appreciate your comment and I understand that a naive search method might be basic for advanced practitioners such as yourself :)