This looks very interesting! I only skimmed the abstract now, but I will look more closely tomorrow. Back in 2016-17 I did a master's thesis on a combination of (much simpler) cellular automata and neuroevolution, and had some thoughts about how other neural "paradigms" like backpropagated deep nets and indeed, adversarial training could be used with CAs. It's great to see that it's an ongoing topic of research.
