I would like to ask you to employ some critical thinking here. Setting aside that the people responding to you have much better English than even a pretty high-level English speaker coming from Mandarin, most of these accounts have months or years of post histories spent almost entirely talking to each other on their previously un-federated instance, including in some cases very harsh arguing, as well as talking about the US on a personal level with intimate detail (and/or whatever other country they say they are from). Do you really believe the most simple answer is that this is all kabuki theater by the CPC to astroturf an obscure collection of websites by wasting a ridiculous amount of resources and the time of highly English-fluent actors? vs just "some people think differently from you"?

If you concede this point, then I would like to ask you to just consider for a moment the implications of the fact that you took the much more absurd and flimsy explanation as though it was just the common-sense explanation. What does that say about the way that you conceptualize the world and what people believe?