As its creator, I would certainly agree. Still, I'd feel bad if some poor soul considered it anything but an interesting demonstration of Ruby's capabilities.
It's awesomely cool, but it also defines a global method_missing, which puts you in for a world of pain before even considering the overloaded operators.
It's one of those hacks that are cute and great to play with and awesome proof of concept for new features, but if I saw it in a production codebase, I'd want to strangle someone.