Although I have never been to Xinjiang, China but I have visited Alma Ata, Kazahistan and knew fair few Kazakhs. In their case and in the case of other Central Asian/Steppe Turks what is conspicous is the Russification of these peoples - Tatar, Chuvash, Dagestani, Bashokir. Cyrilc script is in standard use, Russian dominates. There is precious little left of genuine Turkic culture - certainly those that could be attributed to Islamic influence.
In that sense what you see in Uighur region of China is no differant to the wider Turan region. Only there appears to be lot of moaning and b*tching. That I suspect is more to do with geo-politocs then anything intrinsic. I mean people on PDF and wider world seem to be comfortably amniasic about the wholesale genocide in Grozy as late as 1999 in Chechynia. Now that is what I call terror by a state - all administered by Putin.