I know the feeling. The only thing you can do is try to keep an honest perspective on reality. Look for confirmation from reliable sources, wait to see how things turn out before passing it on. It feels bad finding out something important is actually hallucinated codswallop, but it's much worse if you sent it on to your friends first. Don't believe things because you'd like they were true, or reject because you'd prefer they were false.

There's always a tussle for who "controls the narrative", it's not always the well-informed. Look at the Covid 19 outbreak. An honest medic would say it's your choice to take the rapidly-developed vaccine, we don't have as extensive safety and efficacy studies as usual but we're in a time crunch, here are its known side-effects, but also consider what happens if you don't take it and end up contracting the virus, which was ultimately fatal for millions, more fatal the older you were. I wouldn't have believed such basic medical advice could be politicised, but there it was with an American right-wing claiming the medics were lying (why would they?!) and performatively defying basic instructions to avoid spreading a pandemic, then predictably dying of something they could completely have avoided, like Herman Cain. Then they started going for the absolutely bonkers science-free "remedies" invented by their tribe, like shining UV light up your arse or taking horse de-worming tablets. Meanwhile the American left-wing wanted to insist on people wearing masks (even where distancing or ventilation improvements would be more effective) and fire people for not taking the vaccine (what happened to informed consent?)

I don't know which Nobel prize winner became the villain, but I can believe both that it can happen unjustly (politicians or social activists start attacking them for their other beliefs), and sometimes justly; "Nobel disease" is when the celebrated scientist lets recognition go to their head and starts speaking in areas where they aren't experts. The famed example is Linus Pauling who got the Nobel Prize for Chemistry, but in later years started hawking vitamin C tablets saying it could cure cancer; it can't, and he died of cancer. Additional studies have shown that when taken intravenously it can have an effect on some cancer cells as part of a chemotherapy regime, but as orally ingested tablets it's worthless.

For what I've said on China in the previous comment, I have never been, but I am fairly certain of the veracity of all the issues I raised. I can't speak for any specific Chinese person and how they feel about their government, I'm sure millions of them are happy in life no matter how the country is run, and certainly the country is more prosperous these days, but these issues are still there, and we in the West should try our best to avoid lapsing into authoritarianism or totalitarianism.