So what?

right in the article: "Chinese mining pools operate 55% of the network, while U.S. pools manage 40%. U.S. pools primarily cater to institutional miners in America, while Chinese pools support relatively smaller miners in Asia."

So ... "China" does not control it, it's just pools that are located within China. And while US mining is institutionally controlled to a large extent, with large corporations under tight regulation and liable to institutional pressure and demands, mining in China is actually decentralized.

So - good.