meh.
If the average person has the skill to do it, it's not really "art".
If the average person can pull this off, why have we not seen it before?
An intrinsic part of his artwork is the process and that includes the negotiation of the installation. He funds and pays for the installation through the sale of sketches of the projects. He has employed over a 1000 workers for this installation.
Tell me again how this is an "average person"?