This was discussed in the thread a couple days ago about board game rulebook design. I had a similar question (https://news.ycombinator.com/item?id=42302038 - although I phrased it more like wondering if Procida had been ripped off) and got some insightful replies.

In short: it looks identical because it's substantially his work, that he did while employed there. In fact, he's the one giving the talk in the PyCon Australia video there.