Although the title rank of a Young Master is higher and comes with new features like "establishing a sect" and "recruiting disciples," the benefits of being a Heavenly Pride are the best in the entire game.
Once a player becomes a Young Master, they no longer enjoy the benefits of an Inner Sect Disciple.
This is quite reasonable, as "disciples" are nurtured, while "masters" are the nurturers.
After becoming a Young Master, the benefits one receives as a disciple are gone, and the benefits as a master are not as cost-effective. One must rely more on self-sufficiency.
By cultivating more outstanding disciples, one can obtain more resources from the sect.
Heavenly Pride can be seen as an "enhanced version" of an Inner Sect Disciple, enjoying even better sect benefits without the responsibilities of training disciples like a Young Master.
Heavenly Pride has very strict age requirements for cultivation; if one is overage, the title is automatically revoked.