Supernatural entities require supernatural evidences.
The entire argument is based on X remains unexplained therefore X must be supernatural. If you watch the creationists long enough they play a game of hide the ball, keeping their ideas hidden from debate, while openingly discussing their opponents. Creationists rarely begin a discussion by presenting positive evidence for their position, but rather begin by attacking evolution. A good debating strategy. I doubt any creationist will provide an answer for Muzzy's legitimate questions.