Jiang Feng remembered that when he went to Silvermoon, there was no such function just yet.
He guessed that giving a free skill book when a Sect Leader had created a skill must be something that they added afterward.
He gave it a thought and then understood why.
In the game, many of the NPC Sect Leaders had limited unique skills. Most of their skills were similar to class skills, and that would be quite stagnant.
The new function was meant to encourage the Sect Leaders to create new skills.
It was also to encourage players to create skills once they had become Sect Leaders late game.
Only continuous improvement and innovation would allow the game to develop further and to have a longer life.
Rain of Swords: Rank One Sacred Level Skill