This just shows that many of the policies in China are wanted by many, probably the majority, in society there. The policies are not always used for good, but they are indeed used to stop the spread of harmful misinformation or harmful practices (eg. detox via drinking bleach). In the US, you have the right to say something, but that doesn’t mean anyone has to listen to you or have to help spread your message; if you try, you might find a (possibly large) niche that people are interested in such as “the 2020 election was rigged” or “COVID doesn’t exist” or “the moon landing was filmed on a sound stage”, and you won’t be robbed of your autonomy of movement and speech by being sent to jail or a “re-education camp”.