Although the other party was one of the Six Imperials, he was also a teacher of Emperor Jade, so unless Emperor Jade went mad, he wouldn't specifically name him at this time.
And North Pole Emperor Ziwei originated from the Sky Mechanism Pavilion, supported by Master Tianji, and was himself a True Immortal.
Western Emperor Gouchen came from the Sword Sect and had the Sword Emperor as his support. Honored God Houtu came from the Witch Deity Teaching and had sole control of the Netherworld.
It was just himself who originated from the Demonic Way, who was considered the weakest in strength among the Heavenly Court's Six Imperials. Even though he was a True Immortal, and even with the support of a Demonic Way True Immortal Ancestral Master, he was somewhat excluded and considered an easy target.
