So, that would be working towards the eradication of a people. There’s various ways to get there, forced sterilization (which we did with native Americans), outright slaughter or famine (which we did with native Americans), forced removal campaigns (spoiler alert), and, of course, the eradication of cultural identity (like the boarding schools for native Americans).

I'm glad to see we agree on the definition of genocide to include intentional destruction of the culture.

AFAICT, the evidence for what’s happening in Xinjiang is mostly around re-education camps, which could arguably qualify on the fourth criterion, but we don’t really have any reliable details on it because authoritarian governments generally don’t share their secret squirrel bullshit publicly.

I'm not sure you've looked very hard at the "destruction of culture" aspects China is imposing. Here's an article from CNN from 6 years ago:

"Chinese Uyghurs forced to welcome Communist Party into their homes: Government statements and state media reports show that families are required to provide detailed information during the visits on their personal lives and political views. They are also subject to “political education” from the live-in officials– whose stays are mandated to be at least one week per month in some locations."

"In numerous photos posted online, the authorities paint a picture of ethnic unity, showing smiling Han officials and minority families jointly preparing meals, doing household chores, playing sports and even sharing the same bed – images that Human Rights Watch’s Wang says put the “forced intimacy” element of the program on full display. "

"A local government statement online also indicated that officials must inspect the homes they are staying for any religious elements or logos – and instructed the officials to confiscate any such items found in the house."

"“The real intention of the Chinese government is to eliminate the Uyghurs as a distinct ethnic group,” Rebiya Kadeer, a longtime exiled Uyghur leader who recently stepped down as president of the advocacy group World Uyghur Congress, told CNN in an interview in Washington last year."

source