It took me forever to realize this was an April Fools joke (or so I think). Even the adversarial spam made me think "idk why you would do it but that is interesting". Maybe my bias to trust most things from certain sources. :)
While the application is indeed a joke, the technique for sim-to-real transfer (and the robotic system in the post) is very real: https://arxiv.org/abs/1703.06907 :).
You kind of get the sense of living in the future when technology that would have been pure sci-fi within your own past is not only real now, but used for a frivolous joke.