That analogy is comparing apples and turnips.I disagree. Fully functional does not equal age.
Then he would have been wrong. And a fool for assuming that functionality equals age.
My pickup is not old. It did not start out as a wheel barrow and grow into a truck as the years passed. It was designed to be a truck. It was made a truck. Only a fool would assume it had grown from a wheel barrow.
A truck is an object that is manufactured. It is not a growing object. God created order. His creation operates by following the laws He set fourth for it. Natural laws, Observable time and again, They always do the same thing. You throw a rock up, it comes down. Creation was a super natural event. It occurred outside natural law. In creation, mature does equate to the appearance of age.