I'm not sure they're quite making the case for it being bad news. From the article, the current reactors aren't being used to full capacity. And China seems to be focussing on renewables rather than falling back on coal.
https://en.wikipedia.org/wiki/Renewable_energy_in_China
China adds renewables as they expand their population, where it makes economic sense.
Unfortunately (for most), this is not a change from the existing course: https://www.bbc.com/news/science-environment-45640706
At least they are getting out of nuclear, so yay? I think it's just backpedaling due to the low standards and high operational risk of many Chinese industries.