Because what they believed in was not the Profound Goddess Guanyin, but the Great Bodhisattva Guanyin!
In the eyes of them and all the monks throughout the Western Territory, the Profound Goddess Guanyin was the mortal incarnation of the Great Bodhisattva Guanyin.
The Profound Goddess Guanyin represented the Great Bodhisattva Guanyin, descending to the mortal realm to deliver all living beings from the sea of suffering.
Chapter 963