Do they expect to just continue on with this heavily antagonistic relationship with the Uyghurs forever? Wouldn't that cause an increasing risk of some kind of an uprising?

Or do they expect that after a generation or so, the Uyghurs will largely assimilate into the Han culture? Wouldn't that require a lot more subtle and delicate policy? In any case, I really doubt it's realistic; if it was, I'd think it would have already been done. Also, the example of the former USSR suggests that even in a highly authoritarian and centralized country, ethnic tensions remain.