The article says otherwise. It opens with it isn’t genocide but is crimes against humanity.
The U.S. State Department’s Office of the Legal Advisor concluded earlier this year that China’s mass imprisonment and forced labor of ethnic Uighurs in Xinjiang amounts to crimes against humanity—but there was insufficient evidence to prove genocide, placing the United States’ top diplomatic lawyers at odds with both the Trump and Biden administrations, according to three former and current U.S. officials.
https://law.stanford.edu/press/state-department-lawyers-conc...
That whole thing was a very successful propaganda campaign, making people believing China has been mass murdering Uyghurs.