Those are not equivalent as I hint in my last paragraph, different countries and gvmt influence do have different risk factors. You can e.g. criticize the US gvmt in a US-based app with no consequences. Good luck doing that in China (that = criticizing the CCP on a Chinese-based app while living in China).
Actually it might be the other way round. Chinese will not care if you critisize US govt in private messages, but US platform might actually report you to FBI.