Your reasoning does not follow. To see why, take something humans already clearly created: Flight. Kerosene-type jet fuel propulsion has not been observed in nature. It is flight nonetheless.

Human flight is not as agile or energy-effective as a dragonfly, but it is faster and stronger. Just like artificial learning may not be as sample-effecient as the human brain. It is a learning intelligence nonetheless and we are already working with the core mechanisms of reasoning and deduction.