One argument would be that China for some time has maintained the world’s largest biological weapons program which
dwarfs anything the US and the Russians have even when combined.
In fact there is a rule of thumb from the Cold War...US - Nuclear, Soviets - Chemical, Chinese - Biological. Indeed most plagues have originated in China due to the population density and the prevalence of swine (there is a reason many religions don’t consume certain types of meat and in particular pork, it’s correlation with plague goes back thousands of years).
Besides these biological weapons which can be quickly looked up online at US Think Tanks and places like the Army War College...China has also maintained a pretty firm grip on HackerNews.
Twice now as a cybersecurity researcher I’ve come across Elasticsearch clusters employing Logstash in combination with a filebeat that streams in HackerNews topics and comments. This ingestion pipeline seems to be set off if you hit enough “hot words” after which time an Elastalert is sent out to presumably trigger human-in-the-loop to comment and pounce on any criticism. Based on the architecture that I saw in both cases this is a straightforward if not modest and not that sinister interpretation of the infrastructure. Yet it is still very concerning in the aggregate.
In conclusion, China could use these innovations for weapons to kill not as much us as their own people. Additionally their attempts to monitor and at times squelch free speech abroad goes against...a lot of things that people who live in Democracies would agree is valuable and worth protecting.