Both organisations have acknowledged that there is at the worst a cultural genocide going on - ie. An erasure of culture.
One can wonder how such a genocide is carried out, when the Uyghur language is still taught, Uyghur culture and language is still freely distributed and promoted and Uyghur people are a prominent part of the Chinese popular culture.
Your claim leads me to believe you did not engage with the sources provided to you.
Very few people make it out? They can literally just emigrate to China, and then leave from there. Emigrating from north Korea is only difficult due to us embargoes.
While I think nay accusation of genocide should be taken seriously and investigated, I do not think we should accept these claims without basis, and we have to accept that despite several years of allegations, no proof has been provided. Both the US state department and the CIA have had to acknowledge that there is no genocide going on in Xinjiang. Here's a carrd with mainly Western sources debunking the claims of genocide https://xinjiangahr.carrd.co/