Earlier quoted context omitted.
Almost all of the extreme allegations are levelled by Zenz, Uighur seperatist organizations, and ASPI, an australian think-tank. Other sources do include people visiting there[1], including news-teams[2] and third-nation observers[3], but there claims usually get casually dismissed as a bad source for one reason or the other. Chinese media obviously isn't a good source either. Now Zenz is an evangelical fundamentalis…
Not sure why you are getting downvoted — I didn't know about this lack of sources and took all of the information about the region for granted. Thanks for reminding me that even things that sound plausible (or especially those things) need to be reviewed, toO!
Actual journalistic sources, based on interviews with former detainees, etc, validate the claim that China is undertaking a campaign of demographic genocide against predominantly Muslim minorities: https://apnews.com/269b3de1af34e17c1941a514f78d764c