I used to believe this until I went on a hunt to support that belief with evidence.
It's not there. The various news reports are a giant chain of references to other news reports.
Most of them ultimately reference one of a few sources.
Adrian Zenz is one of the most referenced "experts" on the "Uyghur Genocide". He used to just write about Jesus https://www.amazon.com/Worthy-Escape-Believers-Raptured-Tribulation/dp/1449769063 until God sent him on a mission to take down China. His two big works are "the Xinjiang Cables" (which don't say what he says they say) and a report where he interviewed about a dozen people for their opinions, took it as fact and extrapolated it to the entire population of Xinjiang.
There are also a series of papers from the ASPI. A quick look at their funding list makes it pretty obvious what their agenda is (tl;dr a bunch of defense contractors).
There was a pseudonymous Canadian law student, Shawn Zhang, who pretended to be a satellite image expert and "identified" a bunch of detention centers. According to him it's easy to tell because you can see the barbed wire. I've looked at the images he claimed to reference and there's no barbed wire.
Most of the rest of the "evidence" is from organizations which receive over 90% of their funding from the US government.