Validate what he said with outside sources and post the results.
So, this unnamed person, is he:
fluent in the Uighur language?
informed about what is going on there?
has he spoken to Chinese Uighurs?
Here is another source for you:
https://www.theguardian.com/news/2018/aug/07/why-uighur-muslims-across-china-are-living-in-fear
And another:
As the Chinese authorities continue a brutal crackdown in Xinjiang, the northwest region of China thats home to the Uighur, Islam has been one of the main targets. Major mosques in the major cities of Kashgar and Urumqi now stand empty. Prisoners in the camps are told to renounce God and embrace the Chinese Communist Party.
Prayers, religious education, and the Ramadan fast are increasingly restricted or banned. Even in the rest of China, Arabic text is being stripped from public buildings, and Islamophobia is being tacitly encouraged by party authorities.
https://foreignpolicy.com/2018/07/24/islamic-leaders-have-nothing-to-say-about-chinas-internment-camps-for-muslims/