In my 4.5 years in China (I left in Nov 2019) the country seemingly became more paranoid, with noticeable increases in internet censorship and street-level policing, as well as intensifying nationalist propaganda in everyday media.
We all saw what happened in Hong Kong in the past couple years. We know what has been happening in Xinjiang for longer. China is clearly at war with the "enemies within," and this article gives me an extremely similar vibe. To my mind, this all adds up to weakness, not strength. The Xi regime is trying to forestall dissent, fragmentation, and collapse. Will they succeed? Maybe. But at what cost? The brain drain on China is continuous, the capital flight steady. A "second cultural revolution" may strengthen and perpetuate the CPC's grip on the country, but it ultimately weakens China, and is hardly a threat at all to other countries.