I think that's exactly the point he's making. There's only so many sensible ways one could decoratively light the Eiffel tower, and OP is suggesting that machine learning could generate it artificially.

If that's possible, is there really anything that is non-obvious and copyright-able? If it can't be done, the manipulated photo cannot be held accountable for copyright violations (but it certainly would look like it ought to). The fact that it can come down to something any human can optimize for only makes the law surrounding the copyright of a public display on a building even more absurd.