From what i've seen it's cultural genocide at worst. That's still bad but it's nowhere near the hyperbolic lies that have been circulating. Fox news fascists are pushing a conspiracy called "Sinofication" which seems to be the basis of 99.99999% of the Uighur narrative, and because liberals can use it as consent manufacturing for a war with China, they're eating that shit right up. There's a lot of bullshit and when you compare what they're doing to China today to what they did to the Soviet Union, it sure does seem like the whole thing is just completely made up.

EDIT: I think I know the full picture: There are Uighurs which are radicalized fascists, I think what's happening is that China is deradicalizing them in reeducation camps, and of course the US doesn't like that so they're making up a ton of narratives to make that not the case but because nobody gives a shit about minorities in the states, the only people who care are those who are using it to justify their Sinophobia.