For some of them, yes [0], but even beside that, if you're well off enough, in country that treats dissenters so poorly, to send your child abroad to study at an expensive university, you're likely in favor of the status quo.

0 - https://en.wikipedia.org/wiki/China_Scholarship_Council

The vast majority of students from China in western countries pay out of their own pockets, i.e. their parents saved up or their family are wealthy.

Don't get confused with the CSC who mainly give scholarships (tuition, accommodation, stipend) to non Chinese nationals to study in China.