"If you tell a lie big enough and keep repeating it, people will eventually come to believe it."
- Joseph Goebbels (allegedly)
It is farcical propaganda, period. While there may be heavy-handed counterterrorism and anti-poverty policies circa 2017 in Xinjiang, there is no evidence of "genocide".
It is not Qanon-tier disinformation, which Wikipedia is resilient against.
It is Nayirah-tier disinformation: peddled by special interest groups in Washington, including the State Department, it gets signal-boosted by establishment media who are on good terms with those SIGs.
Wikipedia is extraordinarily vulnerable to this class of disinformation campaign.
And good luck challenging it in the talk page. Your edits will get instantly reverted by an army of pro-Washington trolls. How else could that extremely inaccurate header image stay up?