Here's a thought that will reorganize some of your thinking.
Okinawan kobudo, as you know, is the art of improvised weapons. Kobudo experts are renowned for their ability to pick up a stick, oar, flute, grinder handle, sickle or horse bridle and fight with them. These "agricultural implements" are expedient weapons that a skilled person can use with lethal effect.
So how is karate a "skeleton kobudo?" Karate is the Okinawan art of using your own skeleton as an improvised weapon. That's exactly what we are doing.
Your body is a bag of bones you carry around with you every day, everywhere you go. If you add a dose of skill and coordination to this sack of bones, you have weapons that can crack a man's skull, break his neck, rupture his organs. The key is the skill, but the weapon is the skeleton.
We don't hit people with the soft parts of our bodies, now do we?
The idea that karate is weaponless is wrong. The weapon is there, and it is just as hard and unforgiving as your nunchaku. It is just that it is on the inside of the hand instead of the outside.