China doesn't even give permanent residency to foreigners
China totally does, if you're either employed for 3+ years with a master's degree and annual salary above 500-800k RMB (depending on the province) or with a bachelor's and 5+ years work experience (same income requirements), OR have a PhD and are employed by a company listed on a Chinese (not HK) stock exchange or a government owned company/entity in a higher R&D function (no income requirements), OR are married to a Chinese and have been working for 7+ years in China (no income or education requirements).
Source: Used to live in China, qualified for 2/3 pathways and my company kept pushing me to accept residency (which I refused to be able to withdraw my social security accounts upon my planned departure).
But I digress.
Due to my Chinese wife I have quite a few touching points with "offshore Chinese" as she calls them, and there are quite a few insane ones among the diaspora. The "glory to China, but I wouldn't ever live there again" types, mostly.
And yeah those wechat hymns and crap from douyin is omnipresent. We avoid those people like the plague, but every once in a while some of them show up to events hosted by saner people and spew their bullshit.