To be fair I don't think they have a winning strategy available, so they're making the strongest move they can. Armed insurrection of the type you're describin

To be fair I don't think they have a winning strategy available, so they're making the strongest move they can. Armed insurrection of the type you're describing would just bring the PLA jackboots down on Hong Kong, and the rebels will join the Uyghurs in the camps. Sure there'd be some international backlash, but between backlash and losing Hong Kong, the CCP will choose the backlash. It's an existential issue for them. The only way armed insurrection works is by creating a situation painful enough that, over time (years or decades), the leadership of the occupying force starts asking if the cost is worth it. The current CCP will always answer yes to that question.