I assume you are referring to Xinjiang Uyghurs. Westerners generally ignore the other 55% of Xinjiang's population - non-Uyghur Turks and Han.
In my recent travels, I’ve encountered Uyghurs in multiple provinces outside Xinjiang. I’ve personally seen Uyghurs running small businesses at tourist sites, visiting well-known tourist sites themselves, selling food in small shops (the Xinjiang dumpling was very good and different), and walking with kids along the beach.
I also spent substantial time in China around 15 years ago and sometimes - very rarely - saw Uyghurs during time. To be frank, the number of Uyghurs I see nowadays is ~10x higher than 15 years ago. However, it’s still rare.
According to Western media, there possibly was a period of ~3 years in which Uyghurs were not allowed to leave Xinjiang. I’m not sure whether or not that was actually true. In any case, they certainly live, travel, and run small businesses outside Xinjiang now.