This is a good point. I feel like I have a somewhat unsatisfying answer to this, which is that I am approaching this from a first-principles reasoning of ethical value, which logically leads to the arguing for secession.
Specifically, since I consider the preservation of civil liberties as a foundational ethical value, I consider the broad infringement of it, whether now or in the future is fundamentally unethical. From that perspective I consider both cases unethical, and that places me as in the secessionist category, even though that would mean violating the treaty.
One could argue that from a utilitarian perspective, (that places overall societal utility over individual liberty), that China is acting consistently within it's own interpretation of utilitarian ethics. The CCP could argue that maximizing ethical value necessitates both infringing on civil liberties, and violating the treaty. They could even plausibly point towards their radical success in reducing poverty, and leadership on climate change as an example of the superiority of their system. However, the (ongoing) genocide of Uighurs should clearly illustrate the flaws in this system.
Specifically, since I consider the preservation of civil liberties as a foundational ethical value, I consider the broad infringement of it, whether now or in the future is fundamentally unethical. From that perspective I consider both cases unethical, and that places me as in the secessionist category, even though that would mean violating the treaty.
One could argue that from a utilitarian perspective, (that places overall societal utility over individual liberty), that China is acting consistently within it's own interpretation of utilitarian ethics. The CCP could argue that maximizing ethical value necessitates both infringing on civil liberties, and violating the treaty. They could even plausibly point towards their radical success in reducing poverty, and leadership on climate change as an example of the superiority of their system. However, the (ongoing) genocide of Uighurs should clearly illustrate the flaws in this system.