>> could push propaganda or other material to demoralize the West.

>Not necessary. Our governments are doing a great job of this already.

I'd say it's a bit more nuanced than that - foreign countries are already quite active even when most don't realize it. Major political moves have been influenced by foreign country/ies, regardless of which side of the Atlantic you are - see both Brexit and the 2016 US elections.

theguardian.com/commentisfree/2020/jul/21/russian-meddling-brexit-referendum-tories-russia-report-government

Our governments don't want our societies to collapse. I'm not sure China has the same care for our societies.