I have no doubt there are Chinese propagandists sitting in front of computers watching and interacting with foreigners. I don't know why you think that idea is so ridiculous. The west does it, why wouldn't China?
You're asking a bunch of unrelated questions. It's pretty obvious the epidemic in China is very serious. That's why they are taking all those measures.
I would say the numbers deviating from the model after it has been publicized and discussed online are still evidence against the data being fabricated, but weaker than it could have been because there were definitely Chinese people watching those discussion on social media, and so the idea that they might have corrected the mistake and started adding more variation isn't that unlikely.
I would have expected the rolling out of various countermeasures as the epidemic spreads to have a visible effects on the figures. It's weird that it fits a predictable progression so smoothly.
I'm sorry, but I don't quite understand your point. There are far more than 4 data points fitting the curve smoothly. Shouldn't the data have a lot more variation for something like this?
You're asking a bunch of unrelated questions. It's pretty obvious the epidemic in China is very serious. That's why they are taking all those measures.