It was just that Dyon had never been very interested in forging weapons, so he ignored the path. However, he did read some things from time to time when he was curious.
Birthing spirits was quite rare on the Immortal Plane as well. And, of them, there were even fewer that were naturally birthed. For example, the tower spirit of the Sage Tower was likely artificially inserted. After all, it was a mass-produced war machine, the likelihood of it birthing one naturally was obviously slim.
On the Mortal Plane, the highest weapons were known as Pseudo and True Treasures of the 33 Heavens. However, what many don't know is that those so-called pseudo treasures were actually several grades below true Treasures of the 33 Heavens!
On the mortal plane, 10th, 11th and 12th stage Supreme Grade treasures earn this pseudo title. But if one heard this ranking on the Immortal Plane, they would laugh until their inner organs hurt.