Yes, the CKF agrees with me!
From the website of the Cardinal Kung Foundation as you linked:
The Catholic Church in China is only ONE, but it has TWO faces.
The CCPA is a governmental entity under the Religious Affairs Bureau of the communist government of China to monitor the activities of the Catholic Church in China. It is run by a governmental functionary. It is not a Church by whatever definition. But it coerces Catholic Bishops, priests, and laity to join the association for “protection”, i.e., to be relatively freed from persecution by the “religious police.”
If you will recall, 4 Bishops from mainland China were designated to represent that country in the recently held World Synod of Bishops in Rome. 3 of the Bishops were/are affiliated with the CCPA and one with the “underground” Church. (However, all four were not allowed by the communist government to travel to Rome.)
The people at CKF know that the Catholic Church in China is ONE, which the late Cardinal Kung fought for dearly with his life!