Why hasn’t anyone in the middle east chatted shit about the Uyghurs?

Because there's absolutely no awareness about the issue here. Or about almost anything concerning Russia and China. People here thing Russia is their friend and Ukraine deserves it for having a Zionist president while forgetting that it's Russia behind Al Asad. Also China is, when all's said and done, on good terms with the Middle East and general Muslim world. I don't think anyone is too excited to damage that relation by acknowledging the Uighurs' suffering.