it has to be a systematic, widespread extermination, or attempted extermination, of a national, racial, religious, or ethnic group. There are elements that are present in the Chinese case, but it’s not clear that the intent is to lead to the extermination of a particular ethnic group.
Owkey… So, ‘‘all is queit on the Western front’’?
https://www.aljazeera.com/opinions/2021/5/14/the-faux-anti-imperialism-of-denying-anti-uighur
https://bitterwinter.org/fake-uyghurs-v-genuine-uyghurs-in-the-hague-what-exactly-happened/
The only source that I find that tries to debunk the claim in depth is this one
https://medium.com/@braisedporkblog/debunking-the-uyghur-genocide-a-resource-list-a31dd0ea3d87
But maybe it is because of the interpretation of the word genocide?
https://www.newyorker.com/news/q-and-a/why-hasnt-the-un-accused-china-of-genocide-in-xinjiang