Xinjiang is literally well built up and their language protected, Ukrainian militias on the other hand were indiscriminately shelling Russian speaking areas like Donbas and murdering people, with the government allowing them and trying to stop the Russian language from being taught and existing in Russian speaking locales; the people of Donbas before being liberated by Russia (they actually celebrate Russians as liberators) would've easily traded their fate with the Uighurs of Xinjiang while the Uighurs absolutely would not, which should tell you enough about both regions.