"Rights advocates say the crackdown against underground churches and religious practice that's not state-sanctioned is less about religious practice itself and more about the Chinese Communist Party making sure it remains firmly in control of civil society."
How about the crackdown that IS state sanctioned?
Atheists disgust me.
People who only read what they want out of a text disgust me.
It appears to be impossible for TBD to understand that the relative pronoun "that" in the clause you've highlighted refers to the "religious practice" that's not state-sanctioned and not to any crackdown that's not state-sanctioned?!
Does TBD also imagine that the US crackdown on the Branch Davidians (Wikipedia) was an Atheist or Marxist attack against religion?