I object to this line of thoughts.
I hope I don't sound like a China apologist: the Chinese government has done a terrible crime, and it's a shame that not enough Chinese people are demanding justice, and sooner or later they will have to look back and recognize what happened, hopefully sooner rather than later.
However, packaging that as "the threat of China" is a self-serving narrative that will harm people. I guess you mean well, but in the end that justifies America interfering with other small countries and supporting their dictators, because, hey, otherwise China will be doing the same and at least "our guys" won't be as bad as "their guys". (Just don't look too closely at what our guys are doing.)
More personally, as a South Korean, America having such an opinion basically means my country is forced to "choose side", hurting our economy and destabilizing military balance in East Asia. The only benefactors are military complexes of China and the US.