If he wasn't Hao Tian's nephew, I'm afraid the Divine Supreme Sect would barely bother to think about him.
Because when the Divine Supreme Sect accepts disciples, they need to go through a political vetting process.
Moreover, Heavenly King Yuan Shi has racial discrimination, basically not accepting members of the Demon Race, nor mixed bloods.
Among Heavenly King Yuan Shi's twelve direct disciples, only Master Yellow Dragon is from the Demon Race, and he is ranked last in strength among the Twelve Golden Immortals.
And within the third generation of disciples of the Divine Supreme Sect, only Yang Jian is of mixed blood.
Their inclusion in the Divine Supreme Sect has nothing to do with talent, it's all about background.
Master Yellow Dragon has the backing of the Dragon Clan.
And naturally, Yang Jian has the backing of Hao Tian.
The Divine Supreme Sect does yield to the face of the Heavenly Court.
And the principles of Heavenly King Yuan Shi are also circumstantial.