Xi’s crackdown on the region and its Uyghur population has been labeled an attempted genocide by some governments, human rights groups and legal bodies.
Chinese authorities have detained at least 1 million people in detention and reeducation centres and enacted mass surveillance and systematic oppression of religious and cultural expression. Religious and cultural sites have been destroyed or largely closed off to religious observers, according to research groups. The UN last year found credible evidence of torture and other human rights abuses of Uyghur people, while Human Rights Watch and legal watchdogs say crimes against humanity have been committed.
The official stance if pushed would be some minor rebuke with no weight behind it. I come from that region of the world (Arabian peninsula) and muslims outside the peninsula are deemed less important. Its not how everyone thinks, but there is a turn your nose up at these none Arabic speaking muslims sentiments. You can see it in Qatar and UAE with treatment of Muslim Pakistani workers and even treatment of North African Muslim workers (even though they speak Arabic)
So as stated above the religion is used to control the populace and that “we are the right kind of Muslim” sentiment is used to make sure the religion has not real influence on foreign policy with countries like China that can provide serious surveillance technology.