It is china, of course they are a super power, however what is talked is that they do not have the influence as much as they did last year or any year before that.
To begin with miners in china are looking a way out and trying to figure out ways how they could still profit the way they profit without being under the constant threat of Chinese government and banks. That alone is getting power out of china to begin with.
One country could be too effective for bitcoin (usa with SEC for example) but that doesn't mean they can't lose power as well, China is not powerless country that we should not care about and just forget about, they are still great power but they are no where near the level they used to be which is a good news considering we are aiming at a decentralized currency.