Right, but it also has a "modern art" vibe to it that is fun. Silly, but fun. I think it's more about the initial prompting and feedback loop, the dog itself could have been replaced by /dev/random.
"Hacker curiosity" and "intelectual stimulation" are also subjective, but that's what HN is supposed to be about.
But then I realized I find this kind of whimsy article more fun than a lot of what gets accepted unquestioningly here on HN. It seems light hearted and done in good fun, and it's engineering-related, so no harm done.