I was going to make a similar comment, but I think your comment is a little exaggerated. Freedom of speech is still differentiates the US and China.
The US was really the shining city on the hill before 2008 financial crisis. I personally was huge admirer of the US system. I even spent about 1 year in DC just to study the political system of the US.
Before the 2008 financial crisis, China tried to copy everything from the US, from finanical market regulations to education system and to some degree, political system reform. There was a period when academics and even some very senior CCP members called for small government, separation of party and administrative system, and they even used the term 'put power into cages'.
The 2008 financial crisis that started in the US made China's elites within the party and outside of the party think hard if the US system is really the answer. Trump administration, the handling of covid-19 and the BLM protests further changed the view towards the US and made it impossible for those friendly with the US to promote the US value system in China now.
Tiktok is considered a national pride because it thrives by open competition in the US and the world. This act of forced selling without a due process for Tiktok to defend itself from accusation of spying for China would absolutely be another huge blow to the credibility of the US in China.
It has nothing to do with financial crises or BLM or whatever. Financial crisis also happened in 2001 and 80's, they happen all the time. BLM protests are insignificant, US has protests constantly because they are not restricted by government.
Handling of COVID is bad, and most of us don't like Trump. But Xi's anti west propaganda is very real and influences all Chinese news and social media. Xi has massively ramped up rhetoric against the west and especially US. That is why majority of Chinese don't respect the US anymore.
You can see Xi saber rattling with US, building basesin South China Sea. Troop fights with India. Bullshit with Tibet Dali llama. Uighur re-education camps. Crackdown on Hong Kong. There's many more. This is why relations with US are going bad. Xi is pissing everyone off to drum up patriotism in China and make Chinese direct anger at foreigners instead of problems with Chinese government
I don't know where you got that from. CCP stopped long ago painting the US / western countries as enemies and sources of today's problems of China.
The fact is, Chinese and China in general are much less ideology sensitive now. Given current hostilities from the US, CCP propaganda and China's new medias still haven't called for hate of the US at ideology level. There were hash words against the US, but all targeting very specific actions, for example shutting down of Huston consulate, and specific person, for example Pompeo. There is no ideology level attack.
It is a very large topic to discuss why and when Chinese people stopped admiring the US. I would only say it all started in 2008 financial crisis. It was then China's elites, here I mean both the ones educated in the western countries and the ones with no foreign education background, started to question the soundness of the financial market regulation system of the US and corruption of the US politicians, and then everything else. And when China could produce its own hero startups and entrepreneurs, like Jack Ma of Alibaba, Pony Ma of Tencent, Yiming Zhang of ByteDance, Lei Jun of Xiaomi etc., Chinese people feel more confident that its own system might just work. And Trump administration and the handling of covid19 are the latest blow. CCP doesn't really need to do anything.
All the other matters you mentioned like South China Sea, disputes with India, Xinjiang etc. aren't new problems. They have been there for ages. They are not the factors driving the changes.
A wave of nationalism has swept the western world. From Trump in the US, to Brexit, to numerable populist nationalist parties turning mainstream in Europe (AFD, Front National, Sverigedemokraterna etc.) all stemming out of the frustration of lack of prospects for the common man.
Rather than going to the root cause populist nationalism blames the other; the Chinese, the immigrants, the scientist, the media. And let conflict drive the agenda.
Incredible that it is a widely held view in the west that it is changed Chinese politics (the rise of Xi) that has bought forward the change.
Unfortunately I don't think things will get better any time soon.
They might even accelerate further.