Not sure why this is downvoted. I think it's great and we may see users deliberately do such things to get companies to ban them, which leads to bigger publicity and awareness at little expense.
In this case, the player sacrificed the prize money and some e-status, but for the publicity it got, it was probably worth it.
I think this demo was created recently, and the old article linked in the demo is there only for background info, as the author explained in one of the comments below.
TensorFlow.js only came out this year and the interactive sketch-rnn JavaScript browser demo that this was based off of is also quite recent.
Unfortunately a lot of researchers submit themselves to closed access journals due to prestige factors. I understand why a PhD student or academic might do this, to rake up impact factor points in order to graduate or get pass the tenure committee. But these guys are DeepMind, with high salary jobs already, without the academic BS, so you'd figure they would know better ...