It's not very different from how I learned to tell jokes. My brothers heard a lot of terrible jokes before I figured out timing and other aspects of humour.
If it makes you laugh, it's a good joke. What does the origin matter?
You're not making an argument that Pikazo generates real art. You're making an argument that humans don't make real art. This notion has absolutely no interesting implications for AI. It's like saying "language is relative, so any output of Google Translate is just as valid as what you think is valid".
