All the native Dao Lords, True Immortals, and Immortal Venerables who joined the Nine Major Groups, to the senior management of these groups, serve merely as carriers.
Their function is to bear shares of the Great Dao.
When it comes time to make a trade, they are directly handed over to the targets that need them, to be killed or refined at will.
These carriers do not require their nurturing; they also handle various affairs for them and are always by their side, flattering, and providing emotional value.
Especially...
These carriers diligently cultivate, enhancing their own value, that is, the quantity of their shares, effectively making themselves into tastier, more valuable carriers.
It is for this reason that the Nine Major Groups allow the existence of non-Immortal Spirit Level native cultivators.
Supreme Purity Dao Lord is such, Dao Lord Yuanyi as well, and Jun Tian Dao Lord, who joined Tian Yuan Group staking his life, follows the same path.