I gotta go with nunchuks. Anything you sling around on a chain seems silly to me. It seems like nunchuks are only good weapons against the unarmed. Anyone else has more range, usually something sharp in play and there isn’t a limp chain in the middle reducing the force of your strikes.
They’re kind of designed for a very specific niche, particularly in 18th century naval combat where you want to fill a narrow space with multiple shots and the heavy smoke from the powder prior to attempting to board so that the defenders either get hit, take cover, can’t see for the smoke or are disorientated by the noise.