Maybe he only had the junior noah book to work from...
The builder wanted to sail it (okay, have it towed) to London for the Olympics.
He couldn't get a Certificate of Seaworthiness from any country on the planet, even Liberia.
He couldn't get insurance from any company in the world, even Lloyd's of London, and they normally insure anything - at premiums they decide are appropriate.
The City of London didn't want it. Apart from the distinct danger that it might well sink and bollock up navigation, it coulda damaged the Thames Barrier.
It was regarded as a fire hazard, even if it'd been moored in London.
"Reproduction"? It was built on a frame of 37 steel barges welded together. I'm fairly sure that wasn't an option in Noah's day.
It was, not to put too fine a point on it, a total and utter clusterfuck.